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A129949 as a simple table

na(n)
01
11
22
35
420
5110
6700
75005
840264
9362796
103628680
1139916635
12479001380
136227020514
1487178290836
151307674367545
1620922789887440
17355687428095320
186402373705727184
19121645100408831031
202432902008176638860
2151090942171709438670
221124000727777607678460

[1,1,2,5,20,110,700,5005,40264,362796,3628680,
 39916635,479001380,6227020514,87178290836,
 1307674367545,20922789887440,355687428095320,
 6402373705727184,121645100408831031,
 2432902008176638860,51090942171709438670,
 1124000727777607678460]