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A072852 as a simple table

na(n)
11
22
36
418
554
6162
7454
81267
93613
1010344
1129572
1284436
13240868
14686884
151959636
165592181
1715957717
1845533682
19129922090
20370708166
211057755082
223018154342
238611878218
2424572725639
2570114579881
26200061418144
27570845362600

[1,2,6,18,54,162,454,1267,3613,10344,29572,84436,
 240868,686884,1959636,5592181,15957717,45533682,
 129922090,370708166,1057755082,3018154342,
 8611878218,24572725639,70114579881,200061418144,
 570845362600]