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A149305 as a simple table

na(n)
01
11
24
311
448
5157
6707
72547
811728
944793
10209515
11830425
123928512
1315975975
1476204982
15315911451
161516208552
176380856199
1830770097293
19131072626339
20634440420834
212729589294471
2213252591412098
2357494028166843
24279850008278954
251222697025739077
265964136075927073
2726217164510751277

[1,1,4,11,48,157,707,2547,11728,44793,209515,
 830425,3928512,15975975,76204982,315911451,
 1516208552,6380856199,30770097293,131072626339,
 634440420834,2729589294471,13252591412098,
 57494028166843,279850008278954,1222697025739077,
 5964136075927073,26217164510751277]