A264553 - OEIS

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A264553 as a simple table

n	a(n)
1	0
2	10
3	45
4	216
5	1528
6	11728
7	66372
8	403920
9	2587588
10	16422928
11	100924052
12	627229368
13	3931197172
14	24518011160
15	152485541704
16	950191656704
17	5926384223020
18	36928044675096
19	230056295804064
20	1433703853124720

[0,10,45,216,1528,11728,66372,403920,2587588, 16422928,100924052,627229368,3931197172, 24518011160,152485541704,950191656704, 5926384223020,36928044675096,230056295804064, 1433703853124720]