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A255837 as a simple table

na(n)
01
15
218
361
4182
5506
61338
73369
88172
919197
1043833
1197636
12212748
13454461
14953505
151968095
164001627
178024295
1815885484
1931074351
2060111277
21115071431
22218126868
23409662895
24762679151
251408172844
262579599582
274690277001
288467363674
2915182486586

[1,5,18,61,182,506,1338,3369,8172,19197,43833,
 97636,212748,454461,953505,1968095,4001627,
 8024295,15885484,31074351,60111277,115071431,
 218126868,409662895,762679151,1408172844,
 2579599582,4690277001,8467363674,15182486586]