A070948 a(0) = 1; a(n+1) = smallest number > a(n) such that a(0)*a(1)*...*a(n) + 1 is a square.

1, 3, 5, 8, 14, 17, 44, 53, 1011, 7262969, 27755899054, 10713771825916682198, 1451983503000530523834049701901973110, 5317619734003376302895262678416297955761358855419919105266696681033714

Offset

0,2

Links

Table of n, a(n) for n=0..13.

Example

1*3*5*8+1 = 121 = 11^2.

Crossrefs

Cf. A064691.

Sequence in context: A259597 A095223 A268515 * A352087 A141739 A094007

Adjacent sequences: A070945 A070946 A070947 * A070949 A070950 A070951

Keyword

nonn

Author

Jason Earls, May 15 2002

Extensions

More terms from Don Reble, May 17 2002

Status

approved