A083000 Values of x for which 9y^2 = x^2 + 2xy - 2x has integer solutions with positive y.

3, 18, 338, 2883, 24642, 486098, 4155987, 35532450, 700951682, 5992929075, 51237766962

Offset

1,1

Comments

From the x and y values, one can derive some z's such that 10z^2-9 is a square (A052454): z = x+y-1. Other A052454 values can be derived from A046195.

Links

Table of n, a(n) for n=1..11.

Crossrefs

Cf. A046195, A052454.

Sequence in context: A222790 A128775 A102100 * A370368 A303074 A181040

Adjacent sequences: A082997 A082998 A082999 * A083001 A083002 A083003

Keyword

nonn

Author

Jon Perry, May 30 2003

Extensions

Edited by Don Reble, Nov 07 2005

Status

approved