A162109 - cp's OEIS frontend

A162109 Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in strictly increasing order.

n	a(n)
1	2
2	4
3	9
4	56
5	499
6	8000
7	207554
8	9382078
9	732814910
10	101599273769
11	25151730678684
12	11252735518379960
13	9169484084583765409
14	13716523699765295956974
15	37907229783585348802398136
16	194640906178869631364050052914

[2, 4, 9, 56, 499, 8000, 207554, 9382078, 732814910, 101599273769, 25151730678684, 11252735518379960, 9169484084583765409, 13716523699765295956974, 37907229783585348802398136, 194640906178869631364050052914]

cp's OEIS Frontend

A162109 Number of n X n symmetric binary arrays with rows, considered as graycode numbers, in strictly increasing order.

Table of values

List of values