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A149905 as a simple table

na(n)
01
12
25
314
448
5166
6613
72280
88976
935247
10143382
11582249
122431920
1310125351
1443070020
15182684943
16788474211
173393379082
1814813919095
1964502077124
20284229195699
211249444788695
225548487320409
2324585551900503
24109894795683645
25490239938536434
262203608385587727
279887231443885407

[1,2,5,14,48,166,613,2280,8976,35247,143382,
 582249,2431920,10125351,43070020,182684943,
 788474211,3393379082,14813919095,64502077124,
 284229195699,1249444788695,5548487320409,
 24585551900503,109894795683645,490239938536434,
 2203608385587727,9887231443885407]