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A149544 as a simple table

na(n)
01
11
25
313
455
5183
6797
72857
812825
948217
10220507
11854979
123952923
1315705777
1473027971
15295763237
161381032123
175676154103
1826604487189
19110624463481
20520256180685
212183982552123
2210299802822029
2343589430230891
24206028701021297
25878062403228533
264157818861743501
2717828220266161589

[1,1,5,13,55,183,797,2857,12825,48217,220507,
 854979,3952923,15705777,73027971,295763237,
 1381032123,5676154103,26604487189,110624463481,
 520256180685,2183982552123,10299802822029,
 43589430230891,206028701021297,878062403228533,
 4157818861743501,17828220266161589]