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A066070
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a(1) = 1; for m > 0, a(2m) = 2(2m+1), a(2m+1) = 2m+1.
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1
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1, 6, 3, 10, 5, 14, 7, 18, 9, 22, 11, 26, 13, 30, 15, 34, 17, 38, 19, 42, 21, 46, 23, 50, 25, 54, 27, 58, 29, 62, 31, 66, 33, 70, 35, 74, 37, 78, 39, 82, 41, 86, 43, 90, 45, 94, 47, 98, 49, 102, 51, 106, 53, 110, 55, 114, 57, 118, 59, 122, 61, 126, 63, 130, 65, 134, 67, 138
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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LINKS
| Harry J. Smith, Table of n, a(n) for n=1,...,1000
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FORMULA
| O.g.f.: (x+6x^2+x^3-2x^4)/(1-x^2)^2. - Len Smiley (smiley(AT)math.uaa.alaska.edu), Dec 05 2001
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PROG
| (PARI) { for (n=1, 1000, a=if (n%2, n, 2*n + 2); write("b066070.txt", n, " ", a) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Nov 09 2009]
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CROSSREFS
| Cf. A066069.
Sequence in context: A154465 A176533 A177015 * A112456 A060534 A060445
Adjacent sequences: A066067 A066068 A066069 * A066071 A066072 A066073
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KEYWORD
| easy,nonn
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AUTHOR
| George E. Antoniou (george.antoniou(AT)montclair.edu), Dec 02 2001
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EXTENSIONS
| More terms from Larry Reeves (larryr(AT)acm.org), Dec 04 2001
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