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Find link is a tool written by Edward Betts .
Longer titles found:
Squared triangular number (view ),
Square triangular number (view ),
Centered triangular number (view ),
Doubly triangular number (view )

searching for Triangular number 7 found (143 total)

alternate case: triangular number

Bernoulli's triangle
(505 words)
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numbers. As the third column of Bernoulli's triangle (k = 2) is a triangular number plus one, it forms the lazy caterer's sequence for n cuts, where n

100
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N. J. A. (ed.). "Sequence A000537 (Sum of first n cubes; or n-th triangular number squared)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation

Hypsicles
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when the common difference is 1, the sum of all the numbers is a triangular number ; when 2 a square; when 3, a pentagonal number [and so on]. And the

Nicomachus
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Nicomachus's theorem states that a square whose side length is a triangular number can be partitioned into squares and half-squares whose areas add to

Gematria
(5,163 words)
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the order of letters. It is also sometimes called Mispar Meshulash (triangular number ). Mispar Mispari spells out the standard values of each letter by

Porism
(1,486 words)
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lines cut two and two into 1⁄2n(n − 1) points, 1⁄2n(n − 1) being a triangular number whose side is n − 1. If they are made to turn about the n fixed points

Pascal's pyramid
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in each layer. The number of terms in the nth layer is the (n+1)th triangular number : ( n + 1 ) × ( n + 2 ) 2 {\displaystyle {\frac {(n+1)\times (n+2)}{2}}}