cp's OEIS Frontend

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.

A380056 E.g.f. (exp(x) - 1)/cos(2*x).

Table of values

n a(n)
1 1
2 1
3 13
4 25
5 441
6 1261
7 30213
8 115025
9 3529201
10 16792021
11 629401213
12 3593565625
13 159175688361
14 1060279600381
15 54189700721013
16 412526870321825
17 23894940183997921
18 204641610743378341
19 13248060325188261613
20 126065945039257743625
21 9020317522757414377881
22 94419130586604915837901

List of values

[1, 1, 13, 25, 441, 1261, 30213, 115025, 3529201, 16792021, 629401213, 3593565625, 159175688361, 1060279600381, 54189700721013, 412526870321825, 23894940183997921, 204641610743378341, 13248060325188261613, 126065945039257743625, 9020317522757414377881, 94419130586604915837901]

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

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