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A063914
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Odd numbers interlaced with numbers 3m+2.
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3
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1, 2, 3, 5, 5, 8, 7, 11, 9, 14, 11, 17, 13, 20, 15, 23, 17, 26, 19, 29, 21, 32, 23, 35, 25, 38, 27, 41, 29, 44, 31, 47, 33, 50, 35, 53, 37, 56, 39, 59, 41, 62, 43, 65, 45, 68, 47, 71, 49, 74, 51, 77, 53, 80, 55, 83, 57, 86, 59, 89, 61, 92, 63, 95, 65, 98, 67, 101, 69, 104, 71
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| The reference gives the sequence without the initial 1 and then it is "alternate 3n+2 and 2n+3".
an alternative solution for this sequence is to consider the first second differences repeat giving 2, 3, 5, 5, 8, 7, 11, 12, 14, 14, 17, 16, 20, 21 [From Lorraine Gregory, Ed.D. (lgregory(AT)lssu.edu), Jan 19 2009]
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REFERENCES
| D. Dolan, J. Williamson and M. Muri, Mathematics Activities for Elementary School Teachers: A Problem Solving Approach, Addison Wesley Longman, Inc., NY, Fourth Edition (ISBN 0-201-61321-2), Chapter 1, Activity 2, #9.
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LINKS
| Harry J. Smith, Table of n, a(n) for n=1,...,1000
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MAPLE
| for n from 0 to 80 do printf(`%d, %d, `, 2*n+1, 3*n+2) od:
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PROG
| (PARI) { for (n=1, 1000, if (n%2, a=n, a=3*n/2 - 1); write("b063914.txt", n, " ", a) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Sep 02 2009]
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CROSSREFS
| Sequence in context: A158185 A095413 A134871 * A166250 A174088 A067284
Adjacent sequences: A063911 A063912 A063913 * A063915 A063916 A063917
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KEYWORD
| nonn,easy
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AUTHOR
| Nancy Shaffer (nancys(AT)rose.net), Aug 30 2001
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EXTENSIONS
| Better description from Brian L. Galebach (sequences(AT)SEGmail.com), Sep 05, 2001
More terms from James A. Sellers (sellersj(AT)math.psu.edu), Sep 25 2001
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