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A049968 as a simple table

na(n)
11
23
32
47
515
629
759
8131
9306
10554
111109
122231
134506
149259
1519321
1642039
1798893
18178466
19356933
20713879
211427802
222855851
235712505
2411428407
2522871629
2645822830
2791903700
28184878269
29374041241
30765241606
311599515283

[1,3,2,7,15,29,59,131,306,554,1109,2231,4506,9259,
 19321,42039,98893,178466,356933,713879,1427802,
 2855851,5712505,11428407,22871629,45822830,
 91903700,184878269,374041241,765241606,1599515283]