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A150639 as a simple table

na(n)
01
12
27
327
4116
5514
62353
710965
851848
9247599
101191914
115772364
1228090825
13137232251
14672550545
153304646991
1616273110989
1780280588915
18396665046450
191962512116369
209720646295694
2148195360979746
22239159034845710
231187662016403211
245901789344165780
2529344416116992106
26145978614850978382

[1,2,7,27,116,514,2353,10965,51848,247599,1191914,
 5772364,28090825,137232251,672550545,3304646991,
 16273110989,80280588915,396665046450,
 1962512116369,9720646295694,48195360979746,
 239159034845710,1187662016403211,5901789344165780,
 29344416116992106,145978614850978382]