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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.

A303928 G.f. A(x) satisfies: 1 = Sum_{n>=0} ( (1 + x*A(x)^3)^n - A(x) )^n.

Table of values

n a(n)
0 1
1 1
2 4
3 29
4 312
5 4454
6 78649
7 1644280
8 39580036
9 1076460972
10 32628557331
11 1090654903233
12 39861817143230
13 1581648436369772
14 67718096677762406
15 3112120229328860775
16 152815413664021339930
17 7985028281346030147672
18 442406826626726978612624
19 25906474516335623637923581
20 1598761621228278791567817906

List of values

[1, 1, 4, 29, 312, 4454, 78649, 1644280, 39580036, 1076460972, 32628557331, 1090654903233, 39861817143230, 1581648436369772, 67718096677762406, 3112120229328860775, 152815413664021339930, 7985028281346030147672, 442406826626726978612624, 25906474516335623637923581, 1598761621228278791567817906]

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

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