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Search: id:A090773
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| A090773 |
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Numbers that are congruent to {4, 6} mod 10. |
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+0
2
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| 4, 6, 14, 16, 24, 26, 34, 36, 44, 46, 54, 56, 64, 66, 74, 76, 84, 86, 94, 96, 104, 106, 114, 116, 124, 126, 134, 136, 144, 146, 154, 156, 164, 166, 174, 176, 184, 186, 194, 196, 204, 206, 214, 216, 224, 226, 234, 236, 244, 246, 254, 256, 264, 266, 274, 276, 284
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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Except for the first term, a(n)=10*n-a(n-1), (with a(1)=6) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Oct 18 2009]
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FORMULA
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a(n) = 2 * A047221(n).
a(n)=10*n-a(n-1)-10 (with a(1)=4) [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 26 2009]
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EXAMPLE
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For n=2, a(2)=10*2-4-10=6; n=3, a(3)=10*3-6-10=14; n=4, a(4)=10*4-14-10=16 [From Vincenzo Librandi (vincenzo.librandi(AT)tin.it), Nov 26 2009]
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CROSSREFS
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Cf. A090298.
Sequence in context: A102029 A029641 A089377 this_sequence A024461 A063811 A157616
Adjacent sequences: A090770 A090771 A090772 this_sequence A090774 A090775 A090776
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KEYWORD
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nonn,new
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AUTHOR
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Giovanni Teofilatto (g.teofilatto(AT)tiscalinet.it), Feb 07 2004
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EXTENSIONS
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Edited and extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Feb 10 2004
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