A196700 - cp's OEIS frontend

A196700 Number of n X 1 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,1,0,4,2 for x=0,1,2,3,4.

n	a(n)
1	1
2	2
3	4
4	6
5	12
6	22
7	40
8	74
9	136
10	250
11	460
12	846
13	1556
14	2862
15	5264
16	9682
17	17808
18	32754
19	60244
20	110806
21	203804
22	374854
23	689464
24	1268122
25	2332440
26	4290026
27	7890588
28	14513054
29	26693668
30	49097310
31	90304032
32	166095010
33	305496352
34	561895394

[1, 2, 4, 6, 12, 22, 40, 74, 136, 250, 460, 846, 1556, 2862, 5264, 9682, 17808, 32754, 60244, 110806, 203804, 374854, 689464, 1268122, 2332440, 4290026, 7890588, 14513054, 26693668, 49097310, 90304032, 166095010, 305496352, 561895394]

cp's OEIS Frontend

A196700 Number of n X 1 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,1,0,4,2 for x=0,1,2,3,4.

Table of values

List of values