A251147 - cp's OEIS frontend

A251147 Number of (n+1) X (6+1) 0..2 arrays with every 2 X 2 subblock summing to 4 and no 2 X 2 subblock having exactly two nonzero entries.

n	a(n)
1	427
2	565
3	777
4	1141
5	1743
6	2763
7	4491
8	7453
9	12569
10	21501
11	37255
12	65355
13	116035
14	208469
15	378889
16	696357
17	1293471
18	2426507
19	4593563
20	8767469
21	16856057
22	32613805
23	63450647
24	124026251
25	243400723
26	479274853
27	946371561
28	1873038613
29	3714194799

[427, 565, 777, 1141, 1743, 2763, 4491, 7453, 12569, 21501, 37255, 65355, 116035, 208469, 378889, 696357, 1293471, 2426507, 4593563, 8767469, 16856057, 32613805, 63450647, 124026251, 243400723, 479274853, 946371561, 1873038613, 3714194799]

cp's OEIS Frontend

A251147 Number of (n+1) X (6+1) 0..2 arrays with every 2 X 2 subblock summing to 4 and no 2 X 2 subblock having exactly two nonzero entries.

Table of values

List of values