login

A020031 as a simple table

na(n)
01
11
21
32
48
538
6210
71380
810450
989574
10857352
119063435
12104876887
131318452295
1417893281148
15260730668151
164059948975491
1767279154450986
181182190856781603
1921954973054515490
20429690186924088871

[1,1,1,2,8,38,210,1380,10450,89574,857352,9063435,
 104876887,1318452295,17893281148,260730668151,
 4059948975491,67279154450986,1182190856781603,
 21954973054515490,429690186924088871]