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A136728 as a simple table

na(n)
01
11
24
331
4349
55146
693799
72036161
851283894
91470035101
1047250248569
111683031711516
1265800765032589
132801364476781781
14129003301751229364
156389120632590635971
16338644807090096148809
1719126604338708282552186

[1,1,4,31,349,5146,93799,2036161,51283894,
 1470035101,47250248569,1683031711516,
 65800765032589,2801364476781781,
 129003301751229364,6389120632590635971,
 338644807090096148809,19126604338708282552186]