A381125 Denominators of the convergents to the supergolden ratio.

1, 2, 13, 15, 58, 305, 1278, 28421, 29699, 58120, 262179, 320299, 902777, 76153567, 77056344, 307322599, 384378943, 2613596257, 2997975200, 11607521857, 14605497057, 143056995370, 157662492427, 300719487797, 458381980224, 759101468021, 14881309872623

Offset: 0

Author

Eric W. Weisstein, Feb 14 2025

Keywords

• nonn
• frac
• easy

Links

• Eric Weisstein's World of Mathematics, Convergent.
• Eric Weisstein's World of Mathematics, Denominator.
• Eric Weisstein's World of Mathematics, Supergolden Ratio.

Crossrefs

Cf. A092526 (decimal digits), A369346 (continued fraction).

Cf. A381124 (numerators of convergents).

Programs

Mathematica

Denominator[Convergents[Root[-1 - #^2 + #^3&, 1, 0], 20]]