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A000049 as a simple table

na(n)
00
10
22
33
45
59
616
729
853
998
10181
11341
12640
131218
142321
154449
168546
1716482
1831845
1961707
20119760
21232865
22453511
23884493
241727125
253376376
266607207
2712941838
2825371086
2949776945
3097730393
31192009517
32377473965
33742511438
341461351029
352877568839
365668961811

[0,0,2,3,5,9,16,29,53,98,181,341,640,1218,2321,
 4449,8546,16482,31845,61707,119760,232865,453511,
 884493,1727125,3376376,6607207,12941838,25371086,
 49776945,97730393,192009517,377473965,742511438,
 1461351029,2877568839,5668961811]