OFFSET
1,1
EXAMPLE
n..a(n)=A......B...........C...........A=B+C factorized
1..5...........2...........3...........(5)=(2)+(3)
2..55..........21..........34..........(5*11)=(3*7)+(2*17)
3..1105........231.........874.........(5*13*17)=(3*7*11)+(2*19*23)
4..32045.......15686.......16359.......(5*13*17*29)=(2*11*23*31)+(3*7*19*41)
5..1626905.....397358......1229547.....(5*7*23*43*47)=(2*13*17*29*31)+(3*11*19*37*53)
6..86522095....35750533....50771562....(5*11*17*37*41*61)=(7*13*19*23*29*31)+(2*3*43*47*53*79)
7..6738381681..3218793466..3519588215..(3*17*29*31*47*53*59)=(2*7*23*37*43*61*103)+(5*11*13*19*41*71*89)
CROSSREFS
KEYWORD
more,nonn
AUTHOR
Naohiro Nomoto, Aug 21 2000
EXTENSIONS
a(5)-a(6) from Lars Blomberg, Oct 17 2015
a(7) from Lars Blomberg, Oct 20 2015
STATUS
approved