Triangle of numbers (when unsigned) related to congruum problem: T(n,k)=k^2+2nk-n^2 with n>k>0 and starting at T(2,1)=1.
A057105
Triangle of numbers (when unsigned) related to congruum problem: T(n,k)=k^2+2nk-n^2 with n>k>0 and starting at T(2,1)=1.
Terms
- a(0) =1a(1) =-2a(2) =7a(3) =-7a(4) =4a(5) =17a(6) =-14a(7) =-1a(8) =14a(9) =31a(10) =-23a(11) =-8a(12) =9a(13) =28a(14) =49a(15) =-34a(16) =-17a(17) =2a(18) =23a(19) =46a(20) =71a(21) =-47a(22) =-28a(23) =-7a(24) =16a(25) =41a(26) =68a(27) =97a(28) =-62a(29) =-41
External references
- oeis: A057105