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A092246
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Odd "odious" numbers (cf. A000069).
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4
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1, 7, 11, 13, 19, 21, 25, 31, 35, 37, 41, 47, 49, 55, 59, 61, 67, 69, 73, 79, 81, 87, 91, 93, 97, 103, 107, 109, 115, 117, 121, 127, 131, 133, 137, 143, 145, 151, 155, 157, 161, 167, 171, 173, 179, 181, 185, 191, 193, 199, 203, 205, 211, 213, 217, 223, 227, 229, 233
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| These numbers may be called primitive odious numbers because every odious number is a power of 2 times one of these numbers. Note that the difference between consecutive terms is either 2, 4, or 6. - T. D. Noe, Jun 06 2007
Contribution from Gary W. Adamson (qntmpkt(AT)yahoo.com), Apr 06 2010: (Start)
a(n) = A026147-th odd numbers, where A026147 = (1, 4, 6, 7, 10, 11,...); e.g.
1...2,..3,..4,..5,...6,...7,...8,...9,..10,..11,..12,..13,...
1,..3,..5,..7,..9,..11,..13,..15,..17,..19,..21,..23,..25,...
1...........7,......11,..13,............19,..21,.......25,...; etc... (End)
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LINKS
| T. D. Noe, Table of n, a(n) for n=1..1000
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FORMULA
| a(n)=4*n+2*A010060(n-1)-3; a(n) = 2*A001969(n-1)+1.
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CROSSREFS
| Cf. A129771 (evil odd numbers)
Cf. A026147 [From Gary W. Adamson (qntmpkt(AT)yahoo.com), Apr 06 2010]
Sequence in context: A060772 A064149 A046289 * A084468 A152469 A115558
Adjacent sequences: A092243 A092244 A092245 * A092247 A092248 A092249
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KEYWORD
| nonn
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AUTHOR
| Benoit Cloitre (benoit7848c(AT)orange.fr), Feb 23 2004
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