login

A149203 as a simple table

na(n)
01
11
24
310
439
5133
6503
71903
87473
929283
10117340
11472735
121923988
137866991
1432415016
15134128943
16557609799
172326658582
189745447103
1940938439634
20172464891400
21728418140034
223083825574858
2313082628817159
2455610642800671
25236812974175072
261010124338572475
274315286500849177

[1,1,4,10,39,133,503,1903,7473,29283,117340,
 472735,1923988,7866991,32415016,134128943,
 557609799,2326658582,9745447103,40938439634,
 172464891400,728418140034,3083825574858,
 13082628817159,55610642800671,236812974175072,
 1010124338572475,4315286500849177]