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A015629 as a simple table

na(n)
20
30
40
51
63
712
822
948
1075
11148
12194
13335
14443
15630
16804
171192
181401
191977
202345
212980
223525
234651
245222
256612
267588
279117
2810314
2912781
3013879
3116945
3218903
3321845
3424217
3528301
3630496
3735980
3839410
3944481
4048147
4155816
4259277
4368205

[0,0,0,1,3,12,22,48,75,148,194,335,443,630,804,
 1192,1401,1977,2345,2980,3525,4651,5222,6612,7588,
 9117,10314,12781,13879,16945,18903,21845,24217,
 28301,30496,35980,39410,44481,48147,55816,59277,
 68205]