A227021 - cp's OEIS frontend

A227021 Number of n X 2 (0,1,2) arrays of permanents of 2 X 2 subblocks of some (n+1) X 3 binary array with rows and columns of the latter in lexicographically nondecreasing order.

n	a(n)
1	7
2	26
3	72
4	171
5	368
6	729
7	1343
8	2325
9	3819
10	6001
11	9082
12	13311
13	18978
14	26417
15	36009
16	48185
17	63429
18	82281
19	105340
20	133267
21	166788
22	206697
23	253859
24	309213
25	373775
26	448641
27	534990
28	634087
29	747286
30	876033
31	1021869
32	1186433
33	1371465
34	1578809

[7, 26, 72, 171, 368, 729, 1343, 2325, 3819, 6001, 9082, 13311, 18978, 26417, 36009, 48185, 63429, 82281, 105340, 133267, 166788, 206697, 253859, 309213, 373775, 448641, 534990, 634087, 747286, 876033, 1021869, 1186433, 1371465, 1578809]

cp's OEIS Frontend

A227021 Number of n X 2 (0,1,2) arrays of permanents of 2 X 2 subblocks of some (n+1) X 3 binary array with rows and columns of the latter in lexicographically nondecreasing order.

Table of values

List of values