login

A320681 as a simple table

na(n)
60
71
87
920
1051
11117
12239
13430
14724
151163
161834
172823
184252
196226
208870
2112299
2216712
2322340
2429524
2538606
2649979
2763965
2880946
29101250
30125316
31153592
32186694
33225268
34270172
35322285
36382716
37452614
38533380
39626424
40733387
41855881
42995740
431154735
441334850

[0,1,7,20,51,117,239,430,724,1163,1834,2823,4252,
 6226,8870,12299,16712,22340,29524,38606,49979,
 63965,80946,101250,125316,153592,186694,225268,
 270172,322285,382716,452614,533380,626424,733387,
 855881,995740,1154735,1334850]