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A065691 a(1) = 0; for n > 1 is a(n) the smallest integer > 0 such that the concatenation a(n)a(n-1)...a(2)a(1) is a square. 8

%I

%S 0,10,8,16,146,22086,31071113326,365107058344463715696,

%T 2684967738644586785227227090233956040549004,

%U 809079884187716191997158821357206898310718837487307207657194711477350102495950972665

%N a(1) = 0; for n > 1 is a(n) the smallest integer > 0 such that the concatenation a(n)a(n-1)...a(2)a(1) is a square.

%C a(n) = A061359(n-1) for n > 2.

%Y Cf. A050634, A050635, A061359, A065689, A065690.

%K base,nonn

%O 1,2

%A _Klaus Brockhaus_, Nov 17 2001

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Last modified January 27 06:18 EST 2022. Contains 350601 sequences. (Running on oeis4.)