A299590 - cp's OEIS frontend

A299590 Number of n X 3 0..1 arrays with every element unequal to 0, 1 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

n	a(n)
1	3
2	3
3	5
4	11
5	19
6	35
7	65
8	120
9	220
10	404
11	744
12	1369
13	2517
14	4629
15	8515
16	15662
17	28806
18	52982
19	97450
20	179239
21	329671
22	606359
23	1115269
24	2051300
25	3772928
26	6939496
27	12763724
28	23476149
29	43179369
30	79419241
31	146074759
32	268673370
33	494167370
34	908915498

[3, 3, 5, 11, 19, 35, 65, 120, 220, 404, 744, 1369, 2517, 4629, 8515, 15662, 28806, 52982, 97450, 179239, 329671, 606359, 1115269, 2051300, 3772928, 6939496, 12763724, 23476149, 43179369, 79419241, 146074759, 268673370, 494167370, 908915498]

cp's OEIS Frontend

A299590 Number of n X 3 0..1 arrays with every element unequal to 0, 1 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

Table of values

List of values