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.

A202663 Number of -7..7 arrays of n elements with first through fourth differences also in -7..7.

Table of values

n a(n)
1 15
2 169
3 1483
4 9739
5 47713
6 238453
7 1186107
8 5914721
9 29498237
10 147102833
11 733637717
12 3658966867
13 18248551605
14 91011704581
15 453908063159
16 2263802495143
17 11290385910711
18 56309167233261
19 280833879734153
20 1400618531203889

List of values

[15, 169, 1483, 9739, 47713, 238453, 1186107, 5914721, 29498237, 147102833, 733637717, 3658966867, 18248551605, 91011704581, 453908063159, 2263802495143, 11290385910711, 56309167233261, 280833879734153, 1400618531203889]

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

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