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Search: id:A047280
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| A047280 |
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Numbers that are congruent to {3, 6} mod 7. |
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+0
1
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| 3, 6, 10, 13, 17, 20, 24, 27, 31, 34, 38, 41, 45, 48, 52, 55, 59, 62, 66, 69, 73, 76, 80, 83, 87, 90, 94, 97, 101, 104, 108, 111, 115, 118, 122, 125, 129, 132, 136, 139, 143, 146, 150, 153, 157, 160, 164, 167, 171
(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)-5 (with a(1)=3) [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*2-3-5=6; n=3, a(3)=7*3-6-5=10; n=4, a(4)=7*4-10-5=13 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 23 2009]
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CROSSREFS
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Sequence in context: A080667 A001952 A145383 this_sequence A049880 A128039 A027428
Adjacent sequences: A047277 A047278 A047279 this_sequence A047281 A047282 A047283
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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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