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