A071302 - cp's OEIS frontend

A071302 a(n) = (1/2) * (number of n X n 0..2 matrices M with MM' mod 3 = I, where M' is the transpose of M and I is the n X n identity matrix).

n	a(n)
1	1
2	4
3	24
4	576
5	51840
6	13063680
7	9170703360
8	19808719257600
9	131569513308979200
10	2600339861038664908800
11	152915585868239728626892800
12	27051378802435080953011843891200
13	14395932257291877030764312963579904000

[1, 4, 24, 576, 51840, 13063680, 9170703360, 19808719257600, 131569513308979200, 2600339861038664908800, 152915585868239728626892800, 27051378802435080953011843891200, 14395932257291877030764312963579904000]

cp's OEIS Frontend

A071302 a(n) = (1/2) * (number of n X n 0..2 matrices M with MM' mod 3 = I, where M' is the transpose of M and I is the n X n identity matrix).

Table of values

List of values