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A049970 as a simple table

na(n)
11
23
32
47
516
630
762
8123
9251
10496
11994
121987
133979
147967
1515948
1631928
1763917
18127712
19255426
20510851
211021707
222043423
234086860
248173752
2516347565
2632695258
2765390761
28130782020
29261565033
30523132058
311046268104
322092544189

[1,3,2,7,16,30,62,123,251,496,994,1987,3979,7967,
 15948,31928,63917,127712,255426,510851,1021707,
 2043423,4086860,8173752,16347565,32695258,
 65390761,130782020,261565033,523132058,1046268104,
 2092544189]