login

A008487 as a simple table

na(n)
01
15
215
335
470
5125
6205
7315
8460
9645
10875
111155
121490
131885
142345
152875
163480
174165
184935
195795
206750
217805
228965
2310235
2411620
2513125
2614755
2716515
2818410
2920445
3022625
3124955
3227440
3330085
3432895
3535875
3639030
3742365
3845885
3949595
4053500
4157605
4261915

[1,5,15,35,70,125,205,315,460,645,875,1155,1490,
 1885,2345,2875,3480,4165,4935,5795,6750,7805,8965,
 10235,11620,13125,14755,16515,18410,20445,22625,
 24955,27440,30085,32895,35875,39030,42365,45885,
 49595,53500,57605,61915]