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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.

A326284 G.f. A(x) satisfies: 1 = Sum_{n>=0} 4^n * ((1+x)^n - A(x))^n.

Table of values

n a(n)
0 1
1 1
2 4
3 104
4 4196
5 225216
6 14845072
7 1151255440
8 102289538128
9 10226417550096
10 1135388485042624
11 138583671424928128
12 18446474604149746176
13 2659732597343823233280
14 413060592233577210697984
15 68754628660531280009195776
16 12213125156726936259944672320
17 2306358043375070604869802287616
18 461443265563759624969778550969344
19 97514484569091438266511351355560448

List of values

[1, 1, 4, 104, 4196, 225216, 14845072, 1151255440, 102289538128, 10226417550096, 1135388485042624, 138583671424928128, 18446474604149746176, 2659732597343823233280, 413060592233577210697984, 68754628660531280009195776, 12213125156726936259944672320, 2306358043375070604869802287616, 461443265563759624969778550969344, 97514484569091438266511351355560448]

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

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