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A015628 as a simple table

na(n)
20
30
40
50
60
72
83
96
106
1126
1227
1372
1479
1590
16109
17228
18238
19431
20461
21523
22565
23928
24963
251255
261349
271597
281697
292499
302534
313571
323878
334253
344510
355056
365189
376979
387369
398006
408282
4110800
4210956
4313978
4414607
4515362
4616098
4720114
4820521
4923743

[0,0,0,0,0,2,3,6,6,26,27,72,79,90,109,228,238,431,
 461,523,565,928,963,1255,1349,1597,1697,2499,2534,
 3571,3878,4253,4510,5056,5189,6979,7369,8006,8282,
 10800,10956,13978,14607,15362,16098,20114,20521,
 23743]