login

A290391 as a simple table

na(n)
10
20
30
40
50
60
730
8120
9294
10552
11894
121320
131830
142424
153102
163864
174710
185640
196654
207752
218934
2210200
2311550
2412984
2514502
2616104
2717790
2819560
2921414
3023352
3125374
3227480
3329670
3431944
3534302
3636744
3739270
3841880
3944574
4047352
4150214
4253160
4356190
4459304
4562502

[0,0,0,0,0,0,30,120,294,552,894,1320,1830,2424,
 3102,3864,4710,5640,6654,7752,8934,10200,11550,
 12984,14502,16104,17790,19560,21414,23352,25374,
 27480,29670,31944,34302,36744,39270,41880,44574,
 47352,50214,53160,56190,59304,62502]