The index of the first of two consecutive positive triangular numbers (A000217) the sum of which is equal to the sum of eleven consecutive positive triangular numbers.
A262491
The index of the first of two consecutive positive triangular numbers (A000217) the sum of which is equal to the sum of eleven consecutive positive triangular numbers.
Terms
- a(0) =43a(1) =120a(2) =549a(3) =3783a(4) =17214a(5) =47629a(6) =216688a(7) =1490884a(8) =6782665a(9) =18766098a(10) =85374915a(11) =587404905a(12) =2672353188a(13) =7393795375a(14) =33637500214a(15) =231436042078
External references
- oeis: A262491