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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A069743 Let M_n be the n X n matrix M_(i,j)=1/(3^i+3^j), then a(n) is the numerator of det(M_n).

Table of values

n a(n)
1 1
2 1
3 1
4 169
5 57122
6 1130708969104
7 60520841316555286464512
8 967474236461016996630647788281821986816
9 3959258211397422699939531791736812415390620457773645692928

List of values

[1, 1, 1, 169, 57122, 1130708969104, 60520841316555286464512, 967474236461016996630647788281821986816, 3959258211397422699939531791736812415390620457773645692928]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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