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A047497
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Numbers that are congruent to {1, 2, 4, 5, 7} mod 8.
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0
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1, 2, 4, 5, 7, 9, 10, 12, 13, 15, 17, 18, 20, 21, 23, 25, 26, 28, 29, 31, 33, 34, 36, 37, 39, 41, 42, 44, 45, 47, 49, 50, 52, 53, 55, 57, 58, 60, 61, 63, 65, 66, 68, 69, 71, 73, 74, 76, 77, 79, 81, 82, 84, 85, 87, 89
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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FORMULA
| a(n)= floor((8n-3)/5) [From Gary Detlefs (gdetlefs(AT)aol.com), Mar 07 2010]
a(n)= +a(n-1) +a(n-5) -a(n-6). G.f.: x*(1+x+2*x^2+x^3+2*x^4+x^5)/ ((x^4+x^3+x^2+x+1) * (x-1)^2). [From R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Mar 23 2010]
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MAPLE
| seq(floor((8*n-3)/5), n=1..56); [From Gary Detlefs (gdetlefs(AT)aol.com), Mar 07 2010]
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CROSSREFS
| Sequence in context: A188019 A189382 A087063 * A004956 A026351 A184656
Adjacent sequences: A047494 A047495 A047496 * A047498 A047499 A047500
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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