A280553 - cp's OEIS frontend

A280553 Number of n X 7 0..1 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

n	a(n)
1	13
2	400
3	1316
4	3182
5	6386
6	11697
7	20334
8	34360
9	57389
10	95548
11	159360
12	266756
13	448302
14	755986
15	1278112
16	2164458
17	3668734
18	6220179
19	10544150
20	17865068
21	30247639
22	51170104
23	86486508
24	146040766
25	246372038
26	415246118
27	699240242

[13, 400, 1316, 3182, 6386, 11697, 20334, 34360, 57389, 95548, 159360, 266756, 448302, 755986, 1278112, 2164458, 3668734, 6220179, 10544150, 17865068, 30247639, 51170104, 86486508, 146040766, 246372038, 415246118, 699240242]

cp's OEIS Frontend

A280553 Number of n X 7 0..1 arrays with no element equal to more than one of its horizontal and vertical neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.

Table of values

List of values