OFFSET
0,2
COMMENTS
-1, 1/2, 1/6, 0, -1/30, 0, 1/42, 0,...
3/2, -1/3, -1/6, -1/30, 1/30, 1/42, -1/42,...
-11/6, 1/6, 2/15, 1/15, -1/105, -1/21,...
2, -1/30, -1/15, -8/105, -4/105,...
-61/30, -1/30, -1/105, 4/105,...
2, 1/42, 1/21,..
-83/42, 1/42,...
2,...
etc.
From the second Bernoulli numbers.
CROSSREFS
KEYWORD
sign,frac
AUTHOR
Paul Curtz, Jun 23 2014
EXTENSIONS
a(12)-a(37) from Jean-François Alcover
STATUS
approved