A130289 Record values in A130280: minima of { m>1 | (2n+1)^2(m^2-1)+1 is a square} bigger than for all preceding n.

3, 5, 7, 11, 13, 19, 21, 29, 31, 169, 419, 461, 3269, 7127, 3877019, 22783559, 215308729

Offset: 1

Author

M. F. Hasler, May 24 2007

Keywords

• nonn

Comments

Most elements of this sequence seem to be 1,2 or 4 times a prime.

Crossrefs

Cf. A084702, A130280, A130283, A130284, A130288.

Programs

PARI

A130289( L=999, S=1 )={ local( R, T ); for( n=S, L, if( issquare(n) || R >= T = A130280(n), next ); print1( T ", " ); R=T )}