A162805 - OEIS

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A162805 as a simple table

n	a(n)
0	1
1	19
2	342
3	5985
4	104652
5	1828503
6	31947930
7	558187605
8	9752543136
9	170394389307
10	2977095147966
11	52015183033833
12	908798387526612
13	15878335141888767
14	277422946995884994
15	4847075643050582301

[1,19,342,5985,104652,1828503,31947930,558187605, 9752543136,170394389307,2977095147966, 52015183033833,908798387526612,15878335141888767, 277422946995884994,4847075643050582301]