A175686 - cp's OEIS frontend

A175686 a(n) = binomial(n-j-1,j) + binomial(n-j,j-1) with j= floor((n-1)/2).

n	a(n)
0	0
1	1
2	1
3	2
4	3
5	4
6	7
7	7
8	14
9	11
10	25
11	16
12	41
13	22
14	63
15	29
16	92
17	37
18	129
19	46
20	175
21	56
22	231
23	67
24	298
25	79
26	377
27	92
28	469
29	106
30	575
31	121
32	696
33	137
34	833
35	154
36	987
37	172
38	1159
39	191
40	1350
41	211
42	1561
43	232
44	1793
45	254
46	2047
47	277
48	2324
49	301
50	2625
51	326
52	2951
53	352
54	3303
55	379

[0, 1, 1, 2, 3, 4, 7, 7, 14, 11, 25, 16, 41, 22, 63, 29, 92, 37, 129, 46, 175, 56, 231, 67, 298, 79, 377, 92, 469, 106, 575, 121, 696, 137, 833, 154, 987, 172, 1159, 191, 1350, 211, 1561, 232, 1793, 254, 2047, 277, 2324, 301, 2625, 326, 2951, 352, 3303, 379]

cp's OEIS Frontend

A175686 a(n) = binomial(n-j-1,j) + binomial(n-j,j-1) with j= floor((n-1)/2).

Table of values

List of values