A231044 - OEIS

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A231044 as a simple table

n	a(n)
1	0
2	14
3	50
4	410
5	2430
6	16198
7	103042
8	667690
9	4294910
10	27706854
11	178536322
12	1150960010
13	7418522110
14	47819461126
15	308233683970
16	1986827617770
17	12806735485950
18	82550064227622
19	532103488349058
20	3429848277235530

[0,14,50,410,2430,16198,103042,667690,4294910, 27706854,178536322,1150960010,7418522110, 47819461126,308233683970,1986827617770, 12806735485950,82550064227622,532103488349058, 3429848277235530]