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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.

A258379 O.g.f. satisfies A^4(z) = 1/(1 - z)*( BINOMIAL(BINOMIAL(A(z))) )^3.

Table of values

n a(n)
0 1
1 7
2 73
3 1071
4 21249
5 549927
6 17907177
7 709326255
8 33202983873
9 1794040660359
10 109844961440841
11 7511188035994479
12 567027585432472641
13 46818521577433459239
14 4195842793686119552361
15 405529683304196611790703
16 42039822952112350680798849
17 4652599937163116610404900871

List of values

[1, 7, 73, 1071, 21249, 549927, 17907177, 709326255, 33202983873, 1794040660359, 109844961440841, 7511188035994479, 567027585432472641, 46818521577433459239, 4195842793686119552361, 405529683304196611790703, 42039822952112350680798849, 4652599937163116610404900871]

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

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