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A244501 as a simple table

na(n)
21
38
455
5248
6820
72212
85163
910815
1020833
1137540
1264067
13104518
14164150
15249568
16368935
17532197
18751323
191040560
201416703
211899380
222511352
233278828
244231795
255404363
266835125
278567532
2810650283
2913137730
3016090298
3119574920
3223665487
3328443313
3433997615

[1,8,55,248,820,2212,5163,10815,20833,37540,64067,
 104518,164150,249568,368935,532197,751323,1040560,
 1416703,1899380,2511352,3278828,4231795,5404363,
 6835125,8567532,10650283,13137730,16090298,
 19574920,23665487,28443313,33997615]