A212151 - cp's OEIS frontend

A212151 Number of 2 X 2 matrices M of positive integers such that permanent(M) < n.

n	a(n)
0	0
1	0
2	0
3	1
4	5
5	13
6	27
7	47
8	75
9	112
10	156
11	214
12	278
13	358
14	444
15	552
16	660
17	796
18	930
19	1099
20	1259
21	1457
22	1649
23	1885
24	2101
25	2377
26	2623
27	2933
28	3221
29	3569
30	3879
31	4279
32	4623
33	5056
34	5452
35	5926
36	6334
37	6878
38	7328
39	7892
40	8404
41	9018
42	9540
43	10228
44	10788
45	11504
46	12142
47	12898

[0, 0, 0, 1, 5, 13, 27, 47, 75, 112, 156, 214, 278, 358, 444, 552, 660, 796, 930, 1099, 1259, 1457, 1649, 1885, 2101, 2377, 2623, 2933, 3221, 3569, 3879, 4279, 4623, 5056, 5452, 5926, 6334, 6878, 7328, 7892, 8404, 9018, 9540, 10228, 10788, 11504, 12142, 12898]

cp's OEIS Frontend

A212151 Number of 2 X 2 matrices M of positive integers such that permanent(M) < n.

Table of values

List of values