A197531 - cp's OEIS frontend

A197531 Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,1,0,0 for x=0,1,2,3,4.

n	a(n)
1	3
2	9
3	16
4	33
5	73
6	160
7	361
8	835
9	1966
10	4703
11	11399
12	27914
13	68903
14	171121
15	426940
16	1068865
17	2682789
18	6746336
19	16988333
20	42822747
21	108024178
22	272648551
23	688426371
24	1738750602
25	4392467427
26	11098043841
27	28043540864
28	70868720569
29	179102669081

[3, 9, 16, 33, 73, 160, 361, 835, 1966, 4703, 11399, 27914, 68903, 171121, 426940, 1068865, 2682789, 6746336, 16988333, 42822747, 108024178, 272648551, 688426371, 1738750602, 4392467427, 11098043841, 28043540864, 70868720569, 179102669081]

cp's OEIS Frontend

A197531 Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,1,0,0 for x=0,1,2,3,4.

Table of values

List of values