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Search: id:A047319
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| A047319 |
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Numbers that are congruent to {5, 6} mod 7. |
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+0
2
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| 5, 6, 12, 13, 19, 20, 26, 27, 33, 34, 40, 41, 47, 48, 54, 55, 61, 62, 68, 69, 75, 76, 82, 83, 89, 90, 96, 97, 103, 104, 110, 111, 117, 118, 124, 125, 131, 132, 138, 139, 145, 146, 152, 153, 159, 160, 166, 167, 173
(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)=7*n-a(n-1)-3 (with a(1)=5) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 23 2009]
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EXAMPLE
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For n=2,a(2)=7*2-5-3=6; n=3, a(3)=7*3-6-3=12; n=4, a(4)=7*4-12-3=13 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 23 2009]
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CROSSREFS
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Sequence in context: A042183 A041939 A099641 this_sequence A138925 A088767 A032707
Adjacent sequences: A047316 A047317 A047318 this_sequence A047320 A047321 A047322
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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