A205755 - OEIS

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A205755 as a simple table

n	a(n)
1	413
2	1936
3	8926
4	45985
5	240448
6	1320659
7	7401826
8	42660605
9	250029914
10	1490326011
11	8987278254
12	54752835613
13	336083185542
14	2075776885383
15	12881680165752
16	80247514417805
17	501418885256186
18	3140749716392509

[413,1936,8926,45985,240448,1320659,7401826, 42660605,250029914,1490326011,8987278254, 54752835613,336083185542,2075776885383, 12881680165752,80247514417805,501418885256186, 3140749716392509]