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A149091 as a simple table

na(n)
01
11
24
38
431
583
6309
7977
83571
912395
1045458
11165876
12617495
132316191
148773838
1533493548
16128840353
17498456315
181941252054
197594394344
2029871433149
21117966578225
22467857554197
231862361268887
247438937047067
2529811320860773
26119819502795074
27482960010597006
281951744104721491

[1,1,4,8,31,83,309,977,3571,12395,45458,165876,
 617495,2316191,8773838,33493548,128840353,
 498456315,1941252054,7594394344,29871433149,
 117966578225,467857554197,1862361268887,
 7438937047067,29811320860773,119819502795074,
 482960010597006,1951744104721491]