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A241697 as a simple table

na(n)
2121
22150
23688
242561
258253
2623930
2764030
28160539
29381379
30865676
311889308
323984311
338151834
3416234161
3531554397
3659999259
37111824744
38204629354
39368190175
40652238928
411138836325
421961870558
433337496363
445611246209
459330350788
4615353900381
4725019429935

[21,150,688,2561,8253,23930,64030,160539,381379,
 865676,1889308,3984311,8151834,16234161,31554397,
 59999259,111824744,204629354,368190175,652238928,
 1138836325,1961870558,3337496363,5611246209,
 9330350788,15353900381,25019429935]