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 A047501 Numbers that are congruent to {1, 3, 4, 5, 7} mod 8. 1
 1, 3, 4, 5, 7, 9, 11, 12, 13, 15, 17, 19, 20, 21, 23, 25, 27, 28, 29, 31, 33, 35, 36, 37, 39, 41, 43, 44, 45, 47, 49, 51, 52, 53, 55, 57, 59, 60, 61, 63, 65, 67, 68, 69, 71, 73, 75, 76, 77, 79, 81, 83, 84, 85, 87, 89 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Determined by final three binary digits of n. LINKS Index entries for linear recurrences with constant coefficients, signature (1,0,0,0,1,-1). FORMULA G.f.  x*(x^2-x+1)*(1+x)^3 / ( (x^4+x^3+x^2+x+1)*(x-1)^2 ). - R. J. Mathar, Oct 08 2011 CROSSREFS Sequence in context: A003159 A187691 A141259 * A256455 A035242 A190941 Adjacent sequences:  A047498 A047499 A047500 * A047502 A047503 A047504 KEYWORD nonn,easy AUTHOR STATUS approved

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