A034449 - OEIS

A034449 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	1
23	2
24	4
25	9
26	16
27	30
28	54
29	93
30	159
31	267
32	440
33	718
34	1162
35	1858
36	2952
37	4661
38	7306
39	11400
40	17710
41	27390
42	42228
43	64923
44	99552
45	152385
46	232927
47	355691
48	542958
49	829017
50	1266777
51	1938934
52	2975374

[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,2,4, 9,16,30,54,93,159,267,440,718,1162,1858,2952,4661, 7306,11400,17710,27390,42228,64923,99552,152385, 232927,355691,542958,829017,1266777,1938934, 2975374]

[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,2,4,
 9,16,30,54,93,159,267,440,718,1162,1858,2952,4661,
 7306,11400,17710,27390,42228,64923,99552,152385,
 232927,355691,542958,829017,1266777,1938934,
 2975374]