login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A012198 as a simple table

na(n)
01
1-2
232
3-1056
477696
5-8411776
61476954112
7-342658078720
8110693077745664
9-44684649940516864
1023059986721115963392
11-14340030701132323422208
1210822861233504969629892608

[1,-2,32,-1056,77696,-8411776,1476954112,
 -342658078720,110693077745664,-44684649940516864,
 23059986721115963392,-14340030701132323422208,
 10822861233504969629892608]