A251122 - cp's OEIS frontend

A251122 Number of (n+1) X (2+1) 0..1 arrays with no 2 X 2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.

n	a(n)
1	21
2	40
3	69
4	117
5	193
6	315
7	510
8	823
9	1326
10	2136
11	3442
12	5550
13	8955
14	14458
15	23355
16	37743
17	61015
18	98661
19	159564
20	258097
21	417516
22	675450
23	1092784
24	1768032
25	2860593
26	4628380
27	7488705
28	12116793
29	19605181
30	31721631
31	51326442
32	83047675
33	134373690

[21, 40, 69, 117, 193, 315, 510, 823, 1326, 2136, 3442, 5550, 8955, 14458, 23355, 37743, 61015, 98661, 159564, 258097, 417516, 675450, 1092784, 1768032, 2860593, 4628380, 7488705, 12116793, 19605181, 31721631, 51326442, 83047675, 134373690]

cp's OEIS Frontend

A251122 Number of (n+1) X (2+1) 0..1 arrays with no 2 X 2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements.

Table of values

List of values