OFFSET
1,2
EXAMPLE
13*13+14=183=a(12).
2*7+15=29=a(13).
3*5+16=31=a(14).
2*4+17=25=a(15).
17*18+2=308=a(16).
3*2+19=25=a(17).
19*20+2=382=a(18).
2*5+21=31=a(19),
etc.
CROSSREFS
KEYWORD
nonn
AUTHOR
Juri-Stepan Gerasimov, Dec 01 2008
EXTENSIONS
Corrected (39 replaced by 43, 75 by 95, 71 by 130) by R. J. Mathar, May 01 2010
STATUS
approved