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Search: id:A135989
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| A135989 |
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6*n+3+90*floor((6*n+3)/10) |
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+0
1
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| 3, 9, 105, 201, 207, 303, 309, 405, 501, 507, 603, 609, 705, 801, 807, 903, 909, 1005, 1101, 1107, 1203, 1209, 1305, 1401, 1407, 1503, 1509, 1605, 1701, 1707, 1803, 1809, 1905, 2001, 2007, 2103, 2109, 2205, 2301, 2307, 2403, 2409, 2505, 2601, 2607, 2703
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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The sequence gives odd numbers which are divisible by 3.
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LINKS
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Stefano Maruelli, More information
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FORMULA
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a(n) = 6*n+3+90*floor((6*n+3)/10); branch b(k)= a(n)+12*k+90*floor((a(n)/100)
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EXAMPLE
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a(0) = 3, b(0) = a(0), b(1)= 15 b(2) = 27
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KEYWORD
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nonn,easy,new
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AUTHOR
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Stefano Maruelli and Paola Paoloni (robotec(AT)netsurf.it), Mar 02 2008
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EXTENSIONS
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Edited by Charles R Greathouse IV (charles.greathouse(AT)case.edu), Nov 03 2009
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