login

A257519 as a simple table

na(n)
01
11
22
34
49
521
651
7127
8322
9827
102145
115607
1214751
1339020
14103713
15276848
16741901
171995340
185384554
1914576673
2039579527
21107776557
22294283193
23805649528
242211176173
256083560542
2616776970140
2746372110274
28128456563024
29356600559820
30991986172469
312765030171165
327722156349298
3321607098380159

[1,1,2,4,9,21,51,127,322,827,2145,5607,14751,
 39020,103713,276848,741901,1995340,5384554,
 14576673,39579527,107776557,294283193,805649528,
 2211176173,6083560542,16776970140,46372110274,
 128456563024,356600559820,991986172469,
 2765030171165,7722156349298,21607098380159]