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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.

A130002 Alternating sum along antidiagonals of the array of A129952 and its iterated differences.

Table of values

n a(n)
0 1
1 1
2 2
3 3
4 10
5 23
6 60
7 139
8 326
9 735
10 1648
11 3635
12 7962
13 17287
14 37316
15 80091
16 171118
17 364079
18 771864
19 1631107
20 3436994
21 7223511
22 15146092
23 31690283
24 66176790
25 137945983
26 287076800
27 596523219
28 1237785706
29 2565049895
30 5309056788
31 10976027515
32 22667882942

List of values

[1, 1, 2, 3, 10, 23, 60, 139, 326, 735, 1648, 3635, 7962, 17287, 37316, 80091, 171118, 364079, 771864, 1631107, 3436994, 7223511, 15146092, 31690283, 66176790, 137945983, 287076800, 596523219, 1237785706, 2565049895, 5309056788, 10976027515, 22667882942]

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

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