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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.

A173129 a(n) = cosh(2 * n * arccosh(n)).

Table of values

n a(n)
0 1
1 1
2 97
3 19601
4 7380481
5 4517251249
6 4097989415521
7 5170128475599457
8 8661355881006882817
9 18605234632923999244961
10 49862414878754347585980001
11 163104845048002042971670685041
12 639582975902942936737758325440001

List of values

[1, 1, 97, 19601, 7380481, 4517251249, 4097989415521, 5170128475599457, 8661355881006882817, 18605234632923999244961, 49862414878754347585980001, 163104845048002042971670685041, 639582975902942936737758325440001]

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

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