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A319311 as a simple table

na(n)
20
30
41
54
63
79
814
922
1028
1140
1253
1373
1486
15101
16116
17168
18153
19234
20260
21246
22299
23362
24365
25435
26523
27583
28612
29559
30652
31835
32952
33918
341022
351154
361286
371237
381486
391554
401489
411730
421694
431975
441889
452078
462241
472520
482672
492996
502784
512892
523148
533058
543488
553570
564023
573881
584222
594087
604363

[0,0,1,4,3,9,14,22,28,40,53,73,86,101,116,168,153,
 234,260,246,299,362,365,435,523,583,612,559,652,
 835,952,918,1022,1154,1286,1237,1486,1554,1489,
 1730,1694,1975,1889,2078,2241,2520,2672,2996,2784,
 2892,3148,3058,3488,3570,4023,3881,4222,4087,4363]