A083203 a(1) = 1, then smallest number not included earlier such that a(n)*a(n+1) + 1 is a cube.

1, 7, 9, 38, 35, 117, 91, 8, 614, 39312, 167143, 9225632, 27823518, 3438671571811, 810534219404852834, 350099109163999874259659131507909, 538073411436415103320989698699207584507533583587852139

Offset: 1

Author

Amarnath Murthy, Apr 28 2003

Keywords

• nonn

Comments

The next 3 terms are (to 2 significant digits) 4.1*10^95, 1.3*10^183, 3.6*10^351.

Examples

			7*9 + 1 = 64 = 8^3, 9*38 + 1 = 343= 7^3.
		

Crossrefs

Cf. A083204, A082536.

Cf. A091569.

Extensions

Corrected and extended by Vladeta Jovovic, May 01 2003

More terms from Michel ten Voorde Jun 23 2003

More terms from Vladeta Jovovic, Jun 29 2003

a(15) - a(17) from David Wasserman, Mar 18 2004

More terms from David Wasserman, May 20 2004