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A002044 as a simple table

na(n)
36
40
50
621
760
890
9182
10378
11861
121737
133458
146717
1513377
1625877
1749949
1895085
19180254
20338003
21631124
221168226
232151409
243934674
257159108
2612948649
2723307439

[6,0,0,21,60,90,182,378,861,1737,3458,6717,13377,
 25877,49949,95085,180254,338003,631124,1168226,
 2151409,3934674,7159108,12948649,23307439]