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A149488 as a simple table

na(n)
01
11
24
314
451
5201
6823
73436
814575
962776
10273766
111204282
125337100
1323810913
14106823537
15481534000
162179638646
179902272921
1845133705547
19206310531515
20945515644303
214343445670182
2219995082395510
2392225885065701
24426139227741927
251972226545914777
269141415516033028
2742429942858806258

[1,1,4,14,51,201,823,3436,14575,62776,273766,
 1204282,5337100,23810913,106823537,481534000,
 2179638646,9902272921,45133705547,206310531515,
 945515644303,4343445670182,19995082395510,
 92225885065701,426139227741927,1972226545914777,
 9141415516033028,42429942858806258]