A204070 - cp's OEIS frontend

A204070 Number of (n+1) X 3 0..2 arrays with every 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..2 introduced in row major order.

n	a(n)
1	38
2	329
3	2882
4	25277
5	221726
6	1944977
7	17061338
8	149662085
9	1312836086
10	11516200601
11	101020133234
12	886148797901
13	7773298914638
14	68187392635937
15	598139935894154
16	5246884637775509
17	46025681868191270
18	403737367538170409

[38, 329, 2882, 25277, 221726, 1944977, 17061338, 149662085, 1312836086, 11516200601, 101020133234, 886148797901, 7773298914638, 68187392635937, 598139935894154, 5246884637775509, 46025681868191270, 403737367538170409]

cp's OEIS Frontend

A204070 Number of (n+1) X 3 0..2 arrays with every 2 X 2 subblock having equal diagonal elements or equal antidiagonal elements, and new values 0..2 introduced in row major order.

Table of values

List of values