abababcb and perfect square puzzle

[K Sengupta]

P is a base ten positive integer of the form abababcb, such that (P-1) is a perfect square ; where a, b and c denote three different digits from 0 to 9, with a being nonzero.

Determine all possible value(s) of P for which this is possible.

[negitron]

I did this programatically and got 2 results. Is this correct and may I post them?

[Edgardo]

My solution:

a=4 b=5 c=6
a=8 b=2 c=0