Least square of the form 'sum of n successive terms of a geometric progression + 1', or 0 if no such square exists.

A092960

Least square of the form 'sum of n successive terms of a geometric progression + 1', or 0 if no such square exists.

Terms

    a(0) =1a(1) =4a(2) =36a(3) =16a(4) =900a(5) =64a(6) =15876a(7) =256a(8) =47524a(9) =1024a(10) =386884a(11) =4096a(12) =67076100a(13) =16384a(14) =21921124a(15) =65536a(16) =17179344900a(17) =262144a(18) =274875809796a(19) =1048576a(20) =148371336100a(21) =4194304a(23) =16777216a(25) =67108864a(27) =268435456

External references