login

A218216 as a simple table

na(n)
01
11
21
315
465
5175
61155
77229
831081
9162755
101018195
115448645
1228879019
13171229541
14991796825
155540516759
1632232757569
17190448140543
181105001828111
196463178610505
2038380301015595
21227218808375165
221344777832158545
238022879439995215
2447988823484272835

[1,1,1,15,65,175,1155,7229,31081,162755,1018195,
 5448645,28879019,171229541,991796825,5540516759,
 32232757569,190448140543,1105001828111,
 6463178610505,38380301015595,227218808375165,
 1344777832158545,8022879439995215,
 47988823484272835]