A197403 - cp's OEIS frontend

A197403 Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,1,1,1 for x=0,1,2,3,4.

n	a(n)
1	3
2	9
3	20
4	71
5	227
6	664
7	2107
8	6675
9	20696
10	65029
11	205057
12	643930
13	2026105
14	6384135
15	20104382
16	63329883
17	199576691
18	628932096
19	1982100085
20	6247388117
21	19691746204
22	62069757373
23	195654894641
24	616749232724
25	1944155102539
26	6128552692107

[3, 9, 20, 71, 227, 664, 2107, 6675, 20696, 65029, 205057, 643930, 2026105, 6384135, 20104382, 63329883, 199576691, 628932096, 1982100085, 6247388117, 19691746204, 62069757373, 195654894641, 616749232724, 1944155102539, 6128552692107]

cp's OEIS Frontend

A197403 Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,0,1,1,1 for x=0,1,2,3,4.

Table of values

List of values