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 A016993 a(n) = 7*n+1. 28
 1, 8, 15, 22, 29, 36, 43, 50, 57, 64, 71, 78, 85, 92, 99, 106, 113, 120, 127, 134, 141, 148, 155, 162, 169, 176, 183, 190, 197, 204, 211, 218, 225, 232, 239, 246, 253, 260, 267, 274, 281, 288, 295, 302, 309, 316, 323, 330, 337, 344, 351, 358, 365, 372, 379 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS For n > 3, also the number of (not necessarily maximum) cliques in the n-web graph. - Eric W. Weisstein, Nov 29 2017 LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..5000 Tanya Khovanova, Recursive Sequences Eric Weisstein's World of Mathematics, Clique Eric Weisstein's World of Mathematics, Web Graph Index entries for linear recurrences with constant coefficients, signature (2,-1). FORMULA a(n) = 7*n + 1. G.f.: (1+6*x)/(1-x)^2. MAPLE A016993:=n->7*n+1: seq(A016993(n), n=0..70); # Wesley Ivan Hurt, Nov 01 2014 MATHEMATICA 7*Range[0, 55] + 1 (* Alonso del Arte, Oct 26 2014 *) Table[7 n + 1, {n, 0, 20}] (* Eric W. Weisstein, Nov 29 2017 *) LinearRecurrence[{2, -1}, {8, 15}, {0, 20}] (* Eric W. Weisstein, Nov 29 2017 *) CoefficientList[Series[(1 + 6 x)/(-1 + x)^2, {x, 0, 20}], x] (* Eric W. Weisstein, Nov 29 2017 *) PROG (MAGMA) [7*n+1: n in [0..60]]; // Vincenzo Librandi, May 28 2011 (Haskell) a016993 = (+ 1) . (* 7) a016993_list = [1, 8 ..]  -- Reinhard Zumkeller, Jan 25 2013 (PARI) a(n)=7*n+1 \\ Charles R Greathouse IV, Jul 10 2016 CROSSREFS Cf. A093564 (column 1). Cf. A131844, A008589. Sequence in context: A003786 A008686 A003331 * A079043 A291747 A024734 Adjacent sequences:  A016990 A016991 A016992 * A016994 A016995 A016996 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified April 25 04:08 EDT 2019. Contains 322450 sequences. (Running on oeis4.)