A281053 - cp's OEIS frontend

A281053 Number of nX5 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	2
2	104
3	618
4	2452
5	7803
6	22106
7	58005
8	144283
9	344972
10	800225
11	1812024
12	4023754
13	8791481
14	18948288
15	40366695
16	85135873
17	177990242
18	369259703
19	760850914
20	1558181104
21	3173635543
22	6432024694
23	12977428633
24	26076680087
25	52202242904

[2, 104, 618, 2452, 7803, 22106, 58005, 144283, 344972, 800225, 1812024, 4023754, 8791481, 18948288, 40366695, 85135873, 177990242, 369259703, 760850914, 1558181104, 3173635543, 6432024694, 12977428633, 26076680087, 52202242904]

cp's OEIS Frontend

A281053 Number of nX5 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