OFFSET
0,2
COMMENTS
FORMULA
a(3n) + a(3n+1) + a(3n+2) = 4, 7, -2, -2, -2, 5 ever same six digits?
MAPLE
A141446 := proc(n) local a; a := A102055(n) ; if a > 0 then a mod 9; else (a mod 9)-9; end if; end proc; # R. J. Mathar, Jul 07 2011
CROSSREFS
KEYWORD
sign
AUTHOR
Paul Curtz, Aug 07 2008
STATUS
approved