A153499 a(n) is the number whose binary expansion is A153500(n).

1, 5, 17, 85, 365, 1365, 5285, 21845, 88757, 349525, 1387157, 5592405, 22457045, 89478485, 357214805, 1431655765, 5732215637, 22906492245, 91581229397, 366503875925, 1466373418325, 5864062014805, 23453384746325, 93824992236885

Offset: 1

Author

Omar E. Pol, Dec 27 2008

Keywords

• easy
• nonn

Comments

Empirical g.f. confirmed similar to A153497 and A153498. - Ray Chandler, Oct 15 2024

Links

• Index entries for linear recurrences with constant coefficients, signature (5, -14, 50, -56, 80, -64).

Crossrefs

Cf. A135576, A153497, A153498, A153500.

Formula

Empirical g.f.: -x*(64*x^6-80*x^5+16*x^4-20*x^3-6*x^2-1) / ((x-1)*(4*x-1)*(2*x^2+1)*(8*x^2+1)). - Colin Barker, Sep 17 2013

Extensions

More terms from R. J. Mathar, Feb 20 2009