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A037552 as a simple table

na(n)
12
27
322
468
5205
6616
71850
85551
916654
1049964
11149893
12449680
131349042
144047127
1512141382
1636424148
17109272445
18327817336
19983452010
202950356031
218851068094
2226553204284
2379659612853
24238978838560
25716936515682

[2,7,22,68,205,616,1850,5551,16654,49964,149893,
 449680,1349042,4047127,12141382,36424148,
 109272445,327817336,983452010,2950356031,
 8851068094,26553204284,79659612853,238978838560,
 716936515682]