{75, 100, 125} is an example of an arithmetic progression of positive integers such that the n-th term is a perfect n-th power.
Find a longer sequence with this feature.

What is the longest you can get?
P.S. Trival solution(d=0) excluded.

Keys to the World | Rating: 3.00
Posted on 2010-06-22 by Andre (No Solution Yet, 3 Comments)

Power Pattern Poser | Rating: 1.00
Posted on 2010-04-27 by K Sengupta (No Solution Yet, 3 Comments)

More than one way to skin a cat |
Posted on 2010-03-24 by Ady TZIDON (Solution Posted, 6 Comments)

T_i-1 + 2*(T_i-1)^-1 = 2*T_i + (T_i)^-1 |
Posted on 2009-09-20 by K Sengupta (No Solution Yet, 1 Comments)

The Shell Game |
Posted on 2009-06-18 by brianjn (No Solution Yet, 4 Comments)

Hi Tech Sequence |
Posted on 2009-03-11 by Vernon Lewis (Solution Posted, 3 Comments)

The missing letter | Rating: 3.50
Posted on 2008-08-22 by pcbouhid (Solution Posted, 6 Comments)