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A008608 as a simple table

na(n)
11
22
37
440
5357
64820
796030
82766572
9113300265
106499477726
11515564231770
1255908184737696
138203615387086224
141613808957720017838
15422045413500096791377
16145606442599303799948900
1765801956684134601408784992
1838698135339344702725297294600
1929437141738828506134939056167071
2028800381656420765181010517468370560

[1,2,7,40,357,4820,96030,2766572,113300265,
 6499477726,515564231770,55908184737696,
 8203615387086224,1613808957720017838,
 422045413500096791377,145606442599303799948900,
 65801956684134601408784992,
 38698135339344702725297294600,
 29437141738828506134939056167071,
 28800381656420765181010517468370560]