A034521 - OEIS

A034521 as a simple table

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	0
13	0
14	0
15	0
16	0
17	0
18	0
19	0
20	0
21	0
22	0
23	0
24	0
25	0
26	0
27	0
28	1
29	5
30	13
31	34
32	80
33	179
34	376
35	778
36	1550
37	3050
38	5883
39	11264
40	21359
41	40459
42	76539
43	145651
44	279386
45	543062
46	1072348
47	2158354
48	4431005
49	9279882
50	19789644
51	42864534
52	93989745

[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,1,5,13,34,80,179,376,778,1550,3050,5883, 11264,21359,40459,76539,145651,279386,543062, 1072348,2158354,4431005,9279882,19789644,42864534, 93989745]