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A138387 as a simple table

na(n)
61
72
88
923
1074
11220
12674
132011
146038
1517980
1653547
17158907
18471225
191394786
204124929
2112185636
2235972082
23106111713
24312835608
25921809509
262715058701
277993741597
2823527694230
2969228383367
30203648980297
31598945442071

[1,2,8,23,74,220,674,2011,6038,17980,53547,158907,
 471225,1394786,4124929,12185636,35972082,
 106111713,312835608,921809509,2715058701,
 7993741597,23527694230,69228383367,203648980297,
 598945442071]