A280436 - cp's OEIS frontend

A280436 Number of nX4 0..1 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

n	a(n)
1	2
2	20
3	42
4	80
5	138
6	232
7	386
8	640
9	1062
10	1764
11	2934
12	4884
13	8134
14	13548
15	22562
16	37560
17	62498
18	103936
19	172746
20	286936
21	476318
22	790220
23	1310222
24	2171180
25	3595918
26	5952452
27	9848346
28	16286240
29	26920122
30	44477464
31	73454354
32	121259824
33	200099094

[2, 20, 42, 80, 138, 232, 386, 640, 1062, 1764, 2934, 4884, 8134, 13548, 22562, 37560, 62498, 103936, 172746, 286936, 476318, 790220, 1310222, 2171180, 3595918, 5952452, 9848346, 16286240, 26920122, 44477464, 73454354, 121259824, 200099094]

cp's OEIS Frontend

A280436 Number of nX4 0..1 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.

Table of values

List of values