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.

A183947 Number of strings of numbers x(i=1..n) in 0..3 with sum i^2*x(i) equal to n^2*3.

Table of values

n a(n)
1 1
2 1
3 2
4 4
5 10
6 26
7 61
8 147
9 339
10 771
11 1721
12 3770
13 8123
14 17233
15 36041
16 74322
17 151368
18 304614
19 606305
20 1194266
21 2329462
22 4501905
23 8624652
24 16386814
25 30891283
26 57801169
27 107387377
28 198165046
29 363321016
30 662012254
31 1199130676
32 2159720707

List of values

[1, 1, 2, 4, 10, 26, 61, 147, 339, 771, 1721, 3770, 8123, 17233, 36041, 74322, 151368, 304614, 606305, 1194266, 2329462, 4501905, 8624652, 16386814, 30891283, 57801169, 107387377, 198165046, 363321016, 662012254, 1199130676, 2159720707]

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

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