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A010979 as a simple table

na(n)
261
2727
28378
293654
3027405
31169911
32906192
334272048
3418156204
3570607460
36254186856
37854992152
382707475148
398122425444
4023206929840
4163432274896
42166509721602
43421171648758
441029530696964
452438362177020
465608233007146
4712551759587422
4827385657281648

[1,27,378,3654,27405,169911,906192,4272048,
 18156204,70607460,254186856,854992152,2707475148,
 8122425444,23206929840,63432274896,166509721602,
 421171648758,1029530696964,2438362177020,
 5608233007146,12551759587422,27385657281648]