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A186523 as a simple table

na(n)
12
26
314
434
582
6206
7526
81378
93674
109950
1127278
1275514
13210634
14591054
151666406
164716186
1713389434
1838113462
19108737894
20310851770
21890244546
222553782246
237337143110
2421110531858
2560823037522
26175471424214
27506862346750
281465875933394
294244315841666
3012302751068958
3135699515448510
32103697897085458
33301514033677482
34877521633678990

[2,6,14,34,82,206,526,1378,3674,9950,27278,75514,
 210634,591054,1666406,4716186,13389434,38113462,
 108737894,310851770,890244546,2553782246,
 7337143110,21110531858,60823037522,175471424214,
 506862346750,1465875933394,4244315841666,
 12302751068958,35699515448510,103697897085458,
 301514033677482,877521633678990]