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Search: id:A047216
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| A047216 |
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Numbers that are congruent to {1, 2} mod 5. |
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+0
1
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| 1, 2, 6, 7, 11, 12, 16, 17, 21, 22, 26, 27, 31, 32, 36, 37, 41, 42, 46, 47, 51, 52, 56, 57, 61, 62, 66, 67, 71, 72, 76, 77, 81, 82, 86, 87, 91, 92, 96, 97, 101, 102, 106, 107, 111, 112, 116, 117, 121, 122, 126, 127
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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a(n)=5*n-a(n-1)-7 (with a(1)=1) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 22 2009]
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EXAMPLE
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For n=2, a(2)=5*2-1-7=2; n=3, a(3)=5*3-2-7=6; n=4, a(4)=5*4-6-7=7 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 22 2009]
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CROSSREFS
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Sequence in context: A061943 A029507 A047552 this_sequence A039568 A032926 A088227
Adjacent sequences: A047213 A047214 A047215 this_sequence A047217 A047218 A047219
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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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