A184030 - cp's OEIS frontend

A184030 1/16 the number of (n+1) X (n+1) 0..3 arrays with all 2 X 2 subblocks having the same four values.

n	a(n)
1	16
2	40
3	82
4	166
5	322
6	634
7	1234
8	2434
9	4786
10	9490
11	18802
12	37426
13	74482
14	148594
15	296434
16	592114
17	1182706
18	2363890
19	4724722
20	9446386
21	18886642
22	37767154
23	75522034
24	151031794
25	302039026
26	604053490
27	1208057842
28	2416066546
29	4832034802
30	9663971314
31	19327746034
32	38655295474

[16, 40, 82, 166, 322, 634, 1234, 2434, 4786, 9490, 18802, 37426, 74482, 148594, 296434, 592114, 1182706, 2363890, 4724722, 9446386, 18886642, 37767154, 75522034, 151031794, 302039026, 604053490, 1208057842, 2416066546, 4832034802, 9663971314, 19327746034, 38655295474]

cp's OEIS Frontend

A184030 1/16 the number of (n+1) X (n+1) 0..3 arrays with all 2 X 2 subblocks having the same four values.

Table of values

List of values