A281052 - cp's OEIS frontend

A281052 Number of nX4 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

n	a(n)
1	1
2	34
3	239
4	1022
5	3416
6	10112
7	27635
8	71419
9	177320
10	426696
11	1002035
12	2306828
13	5224307
14	11669686
15	25762564
16	56301813
17	121961820
18	262154625
19	559637795
20	1187392495
21	2505484374
22	5260557953
23	10995496220
24	22888340830
25	47465895442

[1, 34, 239, 1022, 3416, 10112, 27635, 71419, 177320, 426696, 1002035, 2306828, 5224307, 11669686, 25762564, 56301813, 121961820, 262154625, 559637795, 1187392495, 2505484374, 5260557953, 10995496220, 22888340830, 47465895442]

cp's OEIS Frontend

A281052 Number of nX4 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

Table of values

List of values