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A064436 as a simple table

na(n)
00
10
22
3152
463654
54294872724
618446744073694523482
7340282366920938463463374607423390140592
8115792089237316195423570985008687907853269984665640564039457583990351590086990

[0,0,2,152,63654,4294872724,18446744073694523482,
 340282366920938463463374607423390140592,
 11579208923731619542357098500868790785326998466564\
 0564039457583990351590086990]