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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.

A381774 Expansion of ( (1/x) * Series_Reversion( x/((1+x) * C(x))^4 ) )^(1/4), where C(x) is the g.f. of A000108.

Table of values

n a(n)
0 1
1 2
2 19
3 255
4 3995
5 68344
6 1237526
7 23316295
8 452385355
9 8977539540
10 181374792040
11 3718002102747
12 77138798530854
13 1616741658725930
14 34179703551312530
15 728019711835819493
16 15608122038151106507
17 336551042553481867640
18 7293934071668996347055

List of values

[1, 2, 19, 255, 3995, 68344, 1237526, 23316295, 452385355, 8977539540, 181374792040, 3718002102747, 77138798530854, 1616741658725930, 34179703551312530, 728019711835819493, 15608122038151106507, 336551042553481867640, 7293934071668996347055]

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

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