Numbers n such that the octagonal number N(n) is equal to the sum of the octagonal numbers N(m) and N(m+1) for some m.

A251896

Numbers n such that the octagonal number N(n) is equal to the sum of the octagonal numbers N(m) and N(m+1) for some m.

Terms

    a(0) =1a(1) =43a(2) =521a(3) =49235a(4) =600849a(5) =56816763a(6) =693378841a(7) =65566494883a(8) =800158581281

External references