A251123 - cp's OEIS frontend

A251123 Number of (n+1) X (3+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	40
2	69
3	108
4	173
5	272
6	430
7	680
8	1080
9	1721
10	2752
11	4413
12	7093
13	11421
14	18415
15	29722
16	48007
17	77582
18	125424
19	202822
20	328042
21	530639
22	858434
23	1388803
24	2246943
25	3635427
26	5882025
27	9517080
28	15398705
29	24915356
30	40313602
31	65228468
32	105541548
33	170769461

[40, 69, 108, 173, 272, 430, 680, 1080, 1721, 2752, 4413, 7093, 11421, 18415, 29722, 48007, 77582, 125424, 202822, 328042, 530639, 858434, 1388803, 2246943, 3635427, 5882025, 9517080, 15398705, 24915356, 40313602, 65228468, 105541548, 170769461]

cp's OEIS Frontend

A251123 Number of (n+1) X (3+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