OFFSET
0,2
COMMENTS
a(n) seems (conjecture) to contain only the numbers 2^n - 1 (for n>=1) and 2^n - 3 (for n>=3)
EXAMPLE
A037861 is: 1,-1,0,-2,1,-1,-1,-3,2,0,0,-2,0,-2,-2,-4,3, ... so sign is +,-,0,-,+,-,-,-,+,0,0,-,0,-,-,-,+, ... thus sequence is 1,3,1,3,3,5, ...
CROSSREFS
KEYWORD
base,nonn
AUTHOR
Denis Boigelot (dboigelo(AT)ulb.ac.be), Sep 29 2008
STATUS
approved