login

A149654 as a simple table

na(n)
01
11
25
315
475
5275
61375
75601
828005
9121089
10605445
112715677
1213578385
1362402157
14312010785
151458538087
167292690435
1734518363331
18172591816655
19824661140195
204123305700975
2119846014090155
2299230070450775
23480374578408091
242401872892040455
2511681652878375315
2658408264391876575
27285150381706792519

[1,1,5,15,75,275,1375,5601,28005,121089,605445,
 2715677,13578385,62402157,312010785,1458538087,
 7292690435,34518363331,172591816655,824661140195,
 4123305700975,19846014090155,99230070450775,
 480374578408091,2401872892040455,
 11681652878375315,58408264391876575,
 285150381706792519]