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A088172 as a simple table

na(n)
11
22
33
47
513
626
753
8106
9211
10422
11845
121689
133379
146758
1513515
1627031
1754061
18108122
19216245
20432489
21864979
221729958
233459915
246919830
2513839661
2627679322
2755358643
28110717287
29221434573
30442869146
31885738293
321771476586
333542953171

[1,2,3,7,13,26,53,106,211,422,845,1689,3379,6758,
 13515,27031,54061,108122,216245,432489,864979,
 1729958,3459915,6919830,13839661,27679322,
 55358643,110717287,221434573,442869146,885738293,
 1771476586,3542953171]