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A049624 as a simple table

na(n)
01
11
23
34
46
57
69
710
812
913
1015
1116
1218
1319
1421
1522
1624
1725
1827
1928
2030
2131
2233
2334
2436

[1,1,3,4,6,7,9,10,12,13,15,16,18,19,21,22,24,25,
 27,28,30,31,33,34,36]