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A151020 as a simple table

na(n)
01
12
210
336
4168
5720
63304
715088
869904
9326624
101535040
117251968
1234448064
13164071424
14784830976
153762710272
1618090215424
1787167033856
18420815500544
192035432822272
209860443239424
2147839254740992
22232412062604288
231130458029407232
245504894214334464
2526834127921946624
26130931569849067520

[1,2,10,36,168,720,3304,15088,69904,326624,
 1535040,7251968,34448064,164071424,784830976,
 3762710272,18090215424,87167033856,420815500544,
 2035432822272,9860443239424,47839254740992,
 232412062604288,1130458029407232,5504894214334464,
 26834127921946624,130931569849067520]