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.

A369285 Number of connected binary matrices with n ones, no zero rows or columns, and distinct rows and columns.

Table of values

n a(n)
0 1
1 1
2 0
3 4
4 12
5 72
6 522
7 4386
8 42360
9 465792
10 5697552
11 77229216
12 1145762400
13 18485254536
14 322206163200
15 6033964218720
16 120830927523240
17 2576515514434920
18 58285369894027440
19 1394212928447354640
20 35160926971256369400
21 932396530226753051160
22 25936228654879236020640

List of values

[1, 1, 0, 4, 12, 72, 522, 4386, 42360, 465792, 5697552, 77229216, 1145762400, 18485254536, 322206163200, 6033964218720, 120830927523240, 2576515514434920, 58285369894027440, 1394212928447354640, 35160926971256369400, 932396530226753051160, 25936228654879236020640]

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

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