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A225551 as a simple table

na(n)
31
44
56
67
78
810
911
1012
1114
1215
1317
1418
1520
1621
1723
1824
1926
2027
2129
2230
2332
2433
2535
2636
2738
2839
2941
3042
3144
3245
3347
3448
3550
3651
3753
3854
3956
4057

[1,4,6,7,8,10,11,12,14,15,17,18,20,21,23,24,26,27,
 29,30,32,33,35,36,38,39,41,42,44,45,47,48,50,51,
 53,54,56,57]