A289147 - cp's OEIS frontend

A289147 Number of (n+1) X (n+1) binary matrices M with at most one 1 in each of the first n rows and each of the first n columns and M[n+1,n+1] = 0.

n	a(n)
0	1
1	5
2	34
3	286
4	2840
5	32344
6	414160
7	5876336
8	91356544
9	1542401920
10	28075364096
11	547643910400
12	11389266525184
13	251428006132736
14	5869482147358720
15	144413021660821504
16	3733822274973040640
17	101181690628832198656
18	2867011297057247002624
19	84764595415605494743040

[1, 5, 34, 286, 2840, 32344, 414160, 5876336, 91356544, 1542401920, 28075364096, 547643910400, 11389266525184, 251428006132736, 5869482147358720, 144413021660821504, 3733822274973040640, 101181690628832198656, 2867011297057247002624, 84764595415605494743040]

cp's OEIS Frontend

A289147 Number of (n+1) X (n+1) binary matrices M with at most one 1 in each of the first n rows and each of the first n columns and M[n+1,n+1] = 0.

Table of values

List of values