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A091964 as a simple table

na(n)
01
12
24
39
421
550
6121
7296
8730
91812
104521
1111328
1228485
1371844
14181674
15460443
161169283
172974574
187578937
1919337489
2049401526
21126350742
22323495259
23829033334
242126454271
255458711430
2614023219126
2736049991901
2892734505565

[1,2,4,9,21,50,121,296,730,1812,4521,11328,28485,
 71844,181674,460443,1169283,2974574,7578937,
 19337489,49401526,126350742,323495259,829033334,
 2126454271,5458711430,14023219126,36049991901,
 92734505565]