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A149207 as a simple table

na(n)
01
11
24
310
440
5129
6549
71933
88502
931708
10142109
11549108
122494264
139891529
1445352455
15183421419
16847068443
173478366440
1816154265409
1967150019188
20313261541733
211315277095648
226158394389696
2326075273852257
24122461840619532
25522243214701570
262459029674132398
2710551608705702006

[1,1,4,10,40,129,549,1933,8502,31708,142109,
 549108,2494264,9891529,45352455,183421419,
 847068443,3478366440,16154265409,67150019188,
 313261541733,1315277095648,6158394389696,
 26075273852257,122461840619532,522243214701570,
 2459029674132398,10551608705702006]