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A117591 as a simple table

na(n)
01
13
25
310
419
537
672
7141
8277
9546
101079
112137
124240
138425
1416761
1533378
1666523
17132669
18264728
19528469
201055341
212108098
224212015
238417265
2416823584
2533629457
2667230257
27134414146
28268753267
29537385141
301074573864
312148829917

[1,3,5,10,19,37,72,141,277,546,1079,2137,4240,
 8425,16761,33378,66523,132669,264728,528469,
 1055341,2108098,4212015,8417265,16823584,33629457,
 67230257,134414146,268753267,537385141,1074573864,
 2148829917]