OFFSET
1,9
MAPLE
a(1)=abs(2-1)=1, a(2)=abs(5-4)=1, a(3)=abs(7-8)=1, a(4)=abs(11-10)=1, a(5)=abs(13-14)=1, a(6)=abs(17-16)=1, a(7)=abs(19-20)=1, a(8)=abs(23-22)=1, a(9)=abs(29-25)=4.
CROSSREFS
KEYWORD
nonn
AUTHOR
Juri-Stepan Gerasimov, Jan 28 2010
EXTENSIONS
Corrected (28 inserted, a third 39 inserted etc.) by R. J. Mathar, May 19 2010
STATUS
approved