login

A303131 as a simple table

na(n)
01
1-4
2-24
3-1248
41632
5-267136
6-669440
7-56925184
8597165568
9-19934894080
1061831327744
11-3209599664128
1247593545383936
13-840449808072704
148113679782510592
15-350055154021040128
165703847053344768000
17-57129722970675609600
18704939718429511778304

[1,-4,-24,-1248,1632,-267136,-669440,-56925184,
 597165568,-19934894080,61831327744,-3209599664128,
 47593545383936,-840449808072704,8113679782510592,
 -350055154021040128,5703847053344768000,
 -57129722970675609600,704939718429511778304]