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A149417 as a simple table

na(n)
01
11
24
312
454
5203
6913
73791
817421
976369
10357010
111610906
127618852
1335049764
14167219609
15780154851
163746904339
1717660665005
1885252847312
19405012623438
201962958881010
219384294780340
2245630045874621
23219250204141161
241068911354389637
255157484620366595
2625199960350383735
27122013300433826613

[1,1,4,12,54,203,913,3791,17421,76369,357010,
 1610906,7618852,35049764,167219609,780154851,
 3746904339,17660665005,85252847312,405012623438,
 1962958881010,9384294780340,45630045874621,
 219250204141161,1068911354389637,5157484620366595,
 25199960350383735,122013300433826613]