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A188446 as a simple table

na(n)
01
10
20
31
4278
567198
624537905
713744869502
811385203921707
913429702800066408
1021828741452174445770
1147540906064229854124913
12135469436416591290078176485
13494882516747849393466094870718
142277287830010010200588821272208162
1513000224127787800362702159372817442122

[1,0,0,1,278,67198,24537905,13744869502,
 11385203921707,13429702800066408,
 21828741452174445770,47540906064229854124913,
 135469436416591290078176485,
 494882516747849393466094870718,
 2277287830010010200588821272208162,
 13000224127787800362702159372817442122]