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A003810 as a simple table

na(n)
120158709760
221032402889738240
3361310134959341568000
41383059427750000000000000
561637759336805268655956377600
639841906041871272087686291128320
71234219157861100568481165377536000
81392357762553459444742198951136000000
9161092184393918097496815608751014338560

[20158709760,21032402889738240,
 361310134959341568000,1383059427750000000000000,
 61637759336805268655956377600,
 39841906041871272087686291128320,
 1234219157861100568481165377536000,
 1392357762553459444742198951136000000,
 161092184393918097496815608751014338560]