login

A224422 as a simple table

na(n)
01
15
220
375
4275
51001
63639
713243
848280
9176341
10645150
112363596
128669142
1331825005
14116914020
15429737220
161580244061
175812839156
1821387636101
1978708626396
20289699273501
211066406842677
223925882147566
2314453780545834
2453216783798234
25195944670698910

[1,5,20,75,275,1001,3639,13243,48280,176341,
 645150,2363596,8669142,31825005,116914020,
 429737220,1580244061,5812839156,21387636101,
 78708626396,289699273501,1066406842677,
 3925882147566,14453780545834,53216783798234,
 195944670698910]