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.

A202660 Number of -4..4 arrays of n elements with first through fourth differences also in -4..4.

Table of values

n a(n)
1 9
2 61
3 323
4 1279
5 3785
6 11413
7 34171
8 102705
9 308785
10 928115
11 2790241
12 8389429
13 25223913
14 75838823
15 228021213
16 685581997
17 2061310319
18 6197655253
19 18634234069
20 56026786211
21 168453450193
22 506482113541
23 1522819068075
24 4578597906197

List of values

[9, 61, 323, 1279, 3785, 11413, 34171, 102705, 308785, 928115, 2790241, 8389429, 25223913, 75838823, 228021213, 685581997, 2061310319, 6197655253, 18634234069, 56026786211, 168453450193, 506482113541, 1522819068075, 4578597906197]

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

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