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 A047374 Numbers that are congruent to {4, 5} mod 7. 1
 4, 5, 11, 12, 18, 19, 25, 26, 32, 33, 39, 40, 46, 47, 53, 54, 60, 61, 67, 68, 74, 75, 81, 82, 88, 89, 95, 96, 102, 103, 109, 110, 116, 117, 123, 124, 130, 131, 137, 138, 144, 145, 151, 152, 158, 159, 165, 166, 172 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Daniel Starodubtsev, Table of n, a(n) for n = 1..10000 Index entries for linear recurrences with constant coefficients, signature (1,1,-1). FORMULA G.f.: x*(4 + x + 2*x^2) / ( (1+x)*(x-1)^2 ). - R. J. Mathar, Dec 04 2011 a(n) = -(5/4)*(-1)^(n-1) + 7*(n-1)/2 + 11/4. - Viet Quoc Le Tran, Jun 14 2014 MATHEMATICA Select[Range[200], MemberQ[{4, 5}, Mod[#, 7]] &] (* Amiram Eldar, May 07 2021 *) CROSSREFS Cf. A017029, A017041. Sequence in context: A188053 A261673 A027708 * A241653 A100107 A066828 Adjacent sequences:  A047371 A047372 A047373 * A047375 A047376 A047377 KEYWORD nonn,easy AUTHOR STATUS approved

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Last modified July 24 11:42 EDT 2021. Contains 346273 sequences. (Running on oeis4.)