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 A147596 a(n) is the number whose binary representation is A138145(n). 3
 1, 3, 7, 15, 31, 63, 119, 231, 455, 903, 1799, 3591, 7175, 14343, 28679, 57351, 114695, 229383, 458759, 917511, 1835015, 3670023, 7340039, 14680071, 29360135, 58720263, 117440519, 234881031, 469762055, 939524103, 1879048199, 3758096391 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Index entries for linear recurrences with constant coefficients, signature (3,-2). FORMULA a(n) = 7*(2^(n-3)+1) if n>=6. [From Hagen von Eitzen, Jun 02 2009] a(n) = 3*a(n-1)-2*a(n-2). G.f.: -x*(2*x^2-1)*(4*x^4+2*x^2+1) / ((x-1)*(2*x-1)). - Colin Barker, Sep 15 2013 PROG (PARI) Vec(-x*(2*x^2-1)*(4*x^4+2*x^2+1)/((x-1)*(2*x-1)) + O(x^100)) \\ Colin Barker, Sep 15 2013 CROSSREFS Cf. A138145, A145641, A147537, A147538, A147539, A147540, A147590, A147595, A147597. Sequence in context: A261586 A043734 A151359 * A115567 A275715 A273672 Adjacent sequences:  A147593 A147594 A147595 * A147597 A147598 A147599 KEYWORD base,easy,nonn AUTHOR Omar E. Pol, Nov 08 2008 EXTENSIONS More terms from Hagen von Eitzen, Jun 02 2009 STATUS approved

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Last modified January 24 00:05 EST 2022. Contains 350515 sequences. (Running on oeis4.)