A187521 - cp's OEIS frontend

A187521 T(n,k)=Number of (n+1)X(n+1) 0..k arrays with the array of 2X2 subblock determinants antisymmetric and no off-diagonal 2X2 subblock determinant zero.

n	a(n)
1	10
2	31
3	6
4	64
5	98
6	2
7	113
8	450
9	354
10	0
11	170
12	1590
13	4200
14	1780
15	0
16	255
17	3426
18	34776
19	73764
20	12008
21	0
22	336
23	8546
24	107990
25	1655170
26	2048596
27	157694
28	0
29	449
30	13992
31	475370
32	8174314
33	144075566
34	129034386
35	2808560
36	0
37	570
38	26158
39	978568
40	70304076

[10, 31, 6, 64, 98, 2, 113, 450, 354, 0, 170, 1590, 4200, 1780, 0, 255, 3426, 34776, 73764, 12008, 0, 336, 8546, 107990, 1655170, 2048596, 157694, 0, 449, 13992, 475370, 8174314, 144075566, 129034386, 2808560, 0, 570, 26158, 978568, 70304076]

cp's OEIS Frontend

A187521 T(n,k)=Number of (n+1)X(n+1) 0..k arrays with the array of 2X2 subblock determinants antisymmetric and no off-diagonal 2X2 subblock determinant zero.

Table of values

List of values