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Search: id:A047358
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| A047358 |
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Numbers that are congruent to {2, 3} mod 7. |
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+0
1
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| 2, 3, 9, 10, 16, 17, 23, 24, 30, 31, 37, 38, 44, 45, 51, 52, 58, 59, 65, 66, 72, 73, 79, 80, 86, 87, 93, 94, 100, 101, 107, 108, 114, 115, 121, 122, 128, 129, 135, 136, 142, 143, 149, 150, 156, 157, 163, 164, 170
(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)-9 (with a(1)=2) [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*2-2-9=3; n=3, a(3)=7*3-3-9=9; n=4, a(4)=7*4-9-9=10 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 23 2009]
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CROSSREFS
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Sequence in context: A135107 A030743 A098020 this_sequence A003140 A057234 A109636
Adjacent sequences: A047355 A047356 A047357 this_sequence A047359 A047360 A047361
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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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