A236582 - OEIS

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A236582 as a simple table

n	a(n)
0	1
1	1
2	1
3	1
4	7
5	15
6	25
7	37
8	100
9	229
10	454
11	811
12	1732
13	3777
14	7858
15	15339
16	31273
17	65536
18	136600
19	276535
20	562728
21	1159942
22	2400783
23	4918159
24	10052140
25	20627526
26	42480474
27	87254743
28	178855138
29	366854368

[1,1,1,1,7,15,25,37,100,229,454,811,1732,3777, 7858,15339,31273,65536,136600,276535,562728, 1159942,2400783,4918159,10052140,20627526, 42480474,87254743,178855138,366854368]