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A001612 as a simple table

na(n)
03
12
24
35
48
512
619
730
848
977
10124
11200
12323
13522
14844
151365
162208
173572
185779
199350
2015128
2124477
2239604
2364080
24103683
25167762
26271444
27439205
28710648
291149852
301860499
313010350
324870848
337881197
3412752044
3520633240
3633385283
3754018522

[3,2,4,5,8,12,19,30,48,77,124,200,323,522,844,
 1365,2208,3572,5779,9350,15128,24477,39604,64080,
 103683,167762,271444,439205,710648,1149852,
 1860499,3010350,4870848,7881197,12752044,20633240,
 33385283,54018522]