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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.

A381174 Expansion of e.g.f. (1/x) * Series_Reversion( x * (1 - x*cos(x)) ).

Table of values

n a(n)
0 1
1 1
2 4
3 27
4 264
5 3365
6 52800
7 980903
8 20984320
9 506078505
10 13525493760
11 394758794419
12 12414039171072
13 414990179398093
14 14523823020621824
15 521523225315049215
16 18594912994237808640
17 613842569215361446097
18 14735570097970682265600
19 -228398321523777856462261

List of values

[1, 1, 4, 27, 264, 3365, 52800, 980903, 20984320, 506078505, 13525493760, 394758794419, 12414039171072, 414990179398093, 14523823020621824, 521523225315049215, 18594912994237808640, 613842569215361446097, 14735570097970682265600, -228398321523777856462261]

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

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