A256703 - OEIS

%I #8 Apr 13 2015 14:44:35

%S 4,292,330,615,625,744,982,1075,1671,2176,2389,2820,2937,3228,3598,

%T 4187,6590,7803,9960,10173,11628,13140,13396,14035,15588,16396,17766,

%U 18813,19858,21111,21115,21246,22808,23241,24784,25050,25149,25167,25384

%N Numbers m such that A166133(m+1) = A166133(m)^2 - 1.

%H Ray Chandler, <a href="/A256703/b256703.txt">Table of n, a(n) for n = 1..6575</a>

%o (Haskell)

%o import Data.List (findIndices)

%o a256703 n = a256703_list !! (n-1)

%o a256703_list = map (+ 1) $ findIndices (\(u, v) -> v == u^2-1) $

%o                            zip a166133_list (tail a166133_list)

%Y Cf. A166133.

%K nonn

%O 1,1

%A _Reinhard Zumkeller_, Apr 08 2015