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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.

A296467 Expansion of e.g.f. arctan(arctanh(x)) (odd powers only).

Table of values

n a(n)
0 1
1 0
2 8
3 112
4 8192
5 599808
6 80010240
7 13537247232
8 3160676007936
9 929451393220608
10 343173318976733184
11 154043745649772986368
12 82935056810462020632576
13 52660879605487383997317120
14 38970318170642827020431523840
15 33236188662933234332228627988480
16 32365907321554306913981616441262080

List of values

[1, 0, 8, 112, 8192, 599808, 80010240, 13537247232, 3160676007936, 929451393220608, 343173318976733184, 154043745649772986368, 82935056810462020632576, 52660879605487383997317120, 38970318170642827020431523840, 33236188662933234332228627988480, 32365907321554306913981616441262080]

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

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