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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.

A304370 Number of function calls of the first kind required to compute ack(3,n), where ack denotes the Ackermann function.

Table of values

n a(n)
0 9
1 58
2 283
3 1244
4 5213
5 21342
6 86367
7 347488
8 1394017
9 5584226
10 22353251
11 89445732
12 357848421
13 1431524710
14 5726360935
15 22905967976
16 91624920425
17 366501778794
18 1466011309419
19 5864053626220
20 23456231282029
21 93824958682478
22 375299901838703
23 1501199741572464

List of values

[9, 58, 283, 1244, 5213, 21342, 86367, 347488, 1394017, 5584226, 22353251, 89445732, 357848421, 1431524710, 5726360935, 22905967976, 91624920425, 366501778794, 1466011309419, 5864053626220, 23456231282029, 93824958682478, 375299901838703, 1501199741572464]

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

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