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A099515 as a simple table

na(n)
01
12
25
313
431
578
6190
7469
81150
92825
106933
1117015
1241754
13102454
14251393
15616826
161513453
173713389
189111087
1922354678
2054848638
21134574493
22330186518
23810131889
241987705301
254876948743
2611965871650
2729358946070
2872033839657

[1,2,5,13,31,78,190,469,1150,2825,6933,17015,
 41754,102454,251393,616826,1513453,3713389,
 9111087,22354678,54848638,134574493,330186518,
 810131889,1987705301,4876948743,11965871650,
 29358946070,72033839657]