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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.

A302587 a(n) = n! * [x^n] exp(n*x)*tanh(x).

Table of values

n a(n)
0 0
1 1
2 4
3 25
4 224
5 2641
6 38592
7 671665
8 13548544
9 310580161
10 7971353600
11 226406902921
12 7049219383296
13 238722074157841
14 8735529994928128
15 343474252543881313
16 14441163232204292096
17 646510839624706118401
18 30704150325602206089216
19 1541807339347429264648441

List of values

[0, 1, 4, 25, 224, 2641, 38592, 671665, 13548544, 310580161, 7971353600, 226406902921, 7049219383296, 238722074157841, 8735529994928128, 343474252543881313, 14441163232204292096, 646510839624706118401, 30704150325602206089216, 1541807339347429264648441]

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

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