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.

A052387 Number of 3 X n binary matrices such that any 2 rows have a common 1, up to column permutations.

Table of values

n a(n)
0 0
1 1
2 8
3 37
4 127
5 358
6 876
7 1926
8 3894
9 7359
10 13156
11 22451
12 36829
13 58396
14 89896
15 134844
16 197676
17 283917
18 400368
19 555313
20 758747
21 1022626
22 1361140
23 1791010
24 2331810
25 3006315
26 3840876
27 4865823
28 6115897
29 7630712
30 9455248

List of values

[0, 1, 8, 37, 127, 358, 876, 1926, 3894, 7359, 13156, 22451, 36829, 58396, 89896, 134844, 197676, 283917, 400368, 555313, 758747, 1022626, 1361140, 1791010, 2331810, 3006315, 3840876, 4865823, 6115897, 7630712, 9455248]