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A020957 as a simple table

na(n)
13
26
311
419
532
654
789
8147
9240
10392
11637
121035
131678
142720
154405
167133
1711546
1818688
1930243
2048941
2179194
22128146
23207351
24335509
25542872
26878394
271421279
282299687
293720980
306020682
319741677
3215762375
3325504068
3441266460
3566770545

[3,6,11,19,32,54,89,147,240,392,637,1035,1678,
 2720,4405,7133,11546,18688,30243,48941,79194,
 128146,207351,335509,542872,878394,1421279,
 2299687,3720980,6020682,9741677,15762375,25504068,
 41266460,66770545]