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.

A173723 Number of symmetry classes of 3 X 3 semimagic squares with distinct positive values < n.

Table of values

n a(n)
10 1
11 4
12 13
13 36
14 80
15 160
16 291
17 496
18 794
19 1226
20 1821
21 2632
22 3691
23 5080
24 6840
25 9070
26 11826
27 15228
28 19344
29 24332
30 30262
31 37322
32 45606
33 55330
34 66597
35 79674
36 94673
37 111892
38 131474
39 153756
40 178891
41 207278
42 239074
43 274724
44 314427
45 358666
46 407649
47 461936

List of values

[1, 4, 13, 36, 80, 160, 291, 496, 794, 1226, 1821, 2632, 3691, 5080, 6840, 9070, 11826, 15228, 19344, 24332, 30262, 37322, 45606, 55330, 66597, 79674, 94673, 111892, 131474, 153756, 178891, 207278, 239074, 274724, 314427, 358666, 407649, 461936]

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

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