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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.

A191277 Expansion of e.g.f. 1/(1 - sinh(x)*cosh(x)).

Table of values

n a(n)
0 1
1 1
2 2
3 10
4 56
5 376
6 3152
7 30640
8 338816
9 4226176
10 58564352
11 892337920
12 14834994176
13 267186021376
14 5182147684352
15 107689460377600
16 2387077442011136
17 56219583797886976
18 1401949974947889152
19 36902741817196871680
20 1022494706646806429696

List of values

[1, 1, 2, 10, 56, 376, 3152, 30640, 338816, 4226176, 58564352, 892337920, 14834994176, 267186021376, 5182147684352, 107689460377600, 2387077442011136, 56219583797886976, 1401949974947889152, 36902741817196871680, 1022494706646806429696]

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

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