Numbers k such that k and k^2+1 have equal sums of distinct prime divisors.

Terms

a(0) =7a(1) =1384230a(2) =1437236a(3) =1770802a(4) =2090663a(5) =4406787a(6) =8493543a(7) =8691863a(8) =11576449a(9) =16147463a(10) =18216983a(11) =22128632a(12) =25156787a(13) =32929141a(14) =43106430a(15) =43768187a(16) =47500230a(17) =50085263a(18) =50497485a(19) =59461592a(20) =66419007a(21) =66507421a(22) =71182692a(23) =95268412a(24) =99848687a(25) =164163693