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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.

A317803 G.f. A(x) satisfies: Sum_{n>=0} ( 1/A(x) - 1/(1+x)^(4*n) )^n = 1.

Table of values

n a(n)
0 1
1 4
2 22
3 308
4 7877
5 287224
6 13293116
7 735955720
8 47105160785
9 3410314286768
10 275071315285416
11 24442342714268592
12 2371821148074889444
13 249559207019813962752
14 28303003280888905543584
15 3442273720243525242224992
16 446977352681757476329452018
17 61724119095080041604018873868
18 9033234491867095630258647812994
19 1396682556807057529868101744945708
20 227509260041431637641628131782970335

List of values

[1, 4, 22, 308, 7877, 287224, 13293116, 735955720, 47105160785, 3410314286768, 275071315285416, 24442342714268592, 2371821148074889444, 249559207019813962752, 28303003280888905543584, 3442273720243525242224992, 446977352681757476329452018, 61724119095080041604018873868, 9033234491867095630258647812994, 1396682556807057529868101744945708, 227509260041431637641628131782970335]

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

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