A003113 - cp's OEIS frontend

A003113 Coefficients in expansion of permanent of infinite tridiagonal matrix shown below.

n	a(n)
0	2
1	1
2	2
3	2
4	3
5	3
6	5
7	5
8	7
9	8
10	10
11	11
12	15
13	16
14	20
15	23
16	28
17	31
18	38
19	42
20	51
21	57
22	67
23	75
24	89
25	99
26	115
27	129
28	149
29	166
30	192
31	213
32	244
33	272
34	309
35	344
36	391
37	433
38	489
39	543
40	611
41	676
42	760
43	839
44	939
45	1038
46	1157
47	1276
48	1422
49	1565
50	1738
51	1913
52	2119
53	2328
54	2576
55	2826
56	3120

[2, 1, 2, 2, 3, 3, 5, 5, 7, 8, 10, 11, 15, 16, 20, 23, 28, 31, 38, 42, 51, 57, 67, 75, 89, 99, 115, 129, 149, 166, 192, 213, 244, 272, 309, 344, 391, 433, 489, 543, 611, 676, 760, 839, 939, 1038, 1157, 1276, 1422, 1565, 1738, 1913, 2119, 2328, 2576, 2826, 3120]

cp's OEIS Frontend

A003113 Coefficients in expansion of permanent of infinite tridiagonal matrix shown below.

Table of values

List of values