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 A082800 Smallest multiple of 4 beginning with n. 6
 12, 20, 32, 4, 52, 60, 72, 8, 92, 100, 112, 12, 132, 140, 152, 16, 172, 180, 192, 20, 212, 220, 232, 24, 252, 260, 272, 28, 292, 300, 312, 32, 332, 340, 352, 36, 372, 380, 392, 40, 412, 420, 432, 44, 452, 460, 472, 48, 492, 500, 512, 52, 532, 540, 552, 56 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 Index entries for linear recurrences with constant coefficients, signature (0,0,0,2,0,0,0,-1). FORMULA From Colin Barker, Mar 23 2017: (Start) G.f.: 4*x*(3 + 5*x + 8*x^2 + x^3 + 7*x^4 + 5*x^5 + 2*x^6) / ((1 - x)^2*(1 + x)^2*(1 + x^2)^2). a(n) = 2*a(n-4) - a(n-8) for n>8. (End) MATHEMATICA Table[If[Mod[n, 4]==0, n, If[Mod[10 n, 4]==0, 10 n, 10 n + 4 - Mod[10 n, 4]]], {n, 56}] (* Ray Chandler, Feb 09 2014 *) PROG (PARI) Vec(4*x*(3 + 5*x + 8*x^2 + x^3 + 7*x^4 + 5*x^5 + 2*x^6) / ((1 - x)^2*(1 + x)^2*(1 + x^2)^2) + O(x^60)) \\ Colin Barker, Mar 23 2017 CROSSREFS Cf. A082799, A082801, A082802, A082803, A082804. Sequence in context: A109547 A334418 A269453 * A026041 A299028 A082296 Adjacent sequences:  A082797 A082798 A082799 * A082801 A082802 A082803 KEYWORD nonn,base,easy AUTHOR Amarnath Murthy, Apr 20 2003 EXTENSIONS Extended by Ray Chandler, Feb 09 2014 Typo in Mathematica program fixed by Vincenzo Librandi, Feb 10 2014 STATUS approved

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Last modified April 19 15:45 EDT 2021. Contains 343116 sequences. (Running on oeis4.)