cp's OEIS Frontend

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.

A202120 Number of -4..4 arrays of n elements with first, second and third differences also in -4..4.

Table of values

n a(n)
1 9
2 61
3 323
4 1279
5 5205
6 21093
7 85771
8 348841
9 1418711
10 5769945
11 23467095
12 95443593
13 388180467
14 1578775913
15 6421070989
16 26115267153
17 106213924727
18 431984776463
19 1756933935339
20 7145661191995
21 29062261695493
22 118199706395781

List of values

[9, 61, 323, 1279, 5205, 21093, 85771, 348841, 1418711, 5769945, 23467095, 95443593, 388180467, 1578775913, 6421070989, 26115267153, 106213924727, 431984776463, 1756933935339, 7145661191995, 29062261695493, 118199706395781]

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

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