Integers b > 0 for which there exists a positive integer a <= b such that (a^2 + b^2) / (1 + a*b) is an integer.
A115169
Integers b > 0 for which there exists a positive integer a <= b such that (a^2 + b^2) / (1 + a*b) is an integer.
Terms
- a(0) =1a(1) =8a(2) =27a(3) =30a(4) =64a(5) =112a(6) =125a(7) =216a(8) =240a(9) =343a(10) =418a(11) =512a(12) =729a(13) =1000a(14) =1020a(15) =1331a(16) =1560a(17) =1728a(18) =2133a(19) =2197a(20) =2744a(21) =3120a(22) =3375a(23) =4096a(24) =4913a(25) =5822a(26) =5832a(27) =6859a(28) =7770a(29) =8000
External references
- oeis: A115169