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A027243 as a simple table

na(n)
01
13
28
322
455
5143
6349
7885
82138
95356
1012890
1132092
1277178
13191530
14460934
151141888
162751551
176809421
1816431189
1940633227
2098175341
21242626935
22586867463
231449457735
243509084995
258661201115
2620982916461
2751755457003

[1,3,8,22,55,143,349,885,2138,5356,12890,32092,
 77178,191530,460934,1141888,2751551,6809421,
 16431189,40633227,98175341,242626935,586867463,
 1449457735,3509084995,8661201115,20982916461,
 51755457003]