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A056879 as a simple table

na(n)
10
20
30
41
52
66
79
823
937
1087
11138
12313
13510
141130
151859
164070
176786
1814750
1924811
2053715
2191096
22196769
23335815
24724470
251243175
262680212
274619999
289957652
2917231447
3037137177
3164480255
32138978282
33242011375
34521706359
35910817416
361963885190
373436463468
387411495499
3912995261895
4028034824487

[0,0,0,1,2,6,9,23,37,87,138,313,510,1130,1859,
 4070,6786,14750,24811,53715,91096,196769,335815,
 724470,1243175,2680212,4619999,9957652,17231447,
 37137177,64480255,138978282,242011375,521706359,
 910817416,1963885190,3436463468,7411495499,
 12995261895,28034824487]