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A047501 Numbers that are congruent to {1, 3, 4, 5, 7} mod 8. 2
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
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: A187691 A141259 A349165 * A256455 A035242 A190941
KEYWORD
nonn,easy
AUTHOR
STATUS
approved

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Last modified March 28 17:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)