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Search: id:A047535
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| A047535 |
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Numbers that are congruent to {4, 7} mod 8. |
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+0
1
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| 4, 7, 12, 15, 20, 23, 28, 31, 36, 39, 44, 47, 52, 55, 60, 63, 68, 71, 76, 79, 84, 87, 92, 95, 100, 103, 108, 111, 116, 119, 124, 127, 132, 135, 140, 143, 148, 151, 156, 159, 164, 167, 172, 175, 180, 183, 188, 191
(list; graph; listen)
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OFFSET
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1,1
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FORMULA
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a(n)=8*n-a(n-1)-5 (with a(1)=4) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 24 2009]
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EXAMPLE
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For n=2, a(2)=8*2-4-5=7; n=3, a(3)=8*3-7-5=12; n=4, a(4)=8*4-12-5=15 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 24 2009]
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CROSSREFS
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Sequence in context: A024813 A049509 A026360 this_sequence A061503 A134659 A075624
Adjacent sequences: A047532 A047533 A047534 this_sequence A047536 A047537 A047538
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KEYWORD
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nonn,new
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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