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A150108 as a simple table

na(n)
01
12
26
319
469
5260
61044
74291
818222
978661
10346083
111541366
126949629
1331624846
14145147357
15670888223
163120523813
1714593863806
1868582232449
19323676827232
201533444023240
217289712158895
2234760673073594
23166216482275935
24796809625131341
253828527888555432
2618433960812625851
2788928010579621446

[1,2,6,19,69,260,1044,4291,18222,78661,346083,
 1541366,6949629,31624846,145147357,670888223,
 3120523813,14593863806,68582232449,323676827232,
 1533444023240,7289712158895,34760673073594,
 166216482275935,796809625131341,3828527888555432,
 18433960812625851,88928010579621446]