Numbers k such that k^2 can be represented as x^2 + x*y + y^2 in more ways than for any smaller k.
A357302
Numbers k such that k^2 can be represented as x^2 + x*y + y^2 in more ways than for any smaller k.
Terms
- a(0) =1a(1) =7a(2) =49a(3) =91a(4) =637a(5) =1729a(6) =12103a(7) =53599a(8) =375193a(9) =1983163a(10) =13882141a(11) =85276009a(12) =596932063a(13) =4178524441a(14) =5201836549a(15) =36412855843a(16) =254889990901a(17) =348523048783
External references
- oeis: A357302