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Search: id:A140899
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| A140899 |
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A140724(n+4). Palindromic period 10:repeat 7, 9, 5, 1, 3, 3, 1, 5, 9, 7 . |
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1
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| 7, 9, 5, 1, 3, 3, 1, 5, 9, 7, 7, 9, 5, 1, 3, 3, 1, 5, 9, 7, 7, 9, 5, 1, 3, 3, 1, 5, 9, 7, 7, 9, 5, 1, 3, 3, 1, 5, 9, 7
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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A140724= period 10:repeat 1, 5, 9, 7, 7, 9, 5, 1, 3, 3 . a(n) is one of its two palindromic decuplets.
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FORMULA
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Note a(2n)+a(2n+1)= period 5: repeat 16, 6, 6, 6, 16 .
a(n)=(1/45)*{5*(n mod 10)+14*[(n+1) mod 10]-13*[(n+2) mod 10]-13*[(n+3) mod 10]+14*[(n+4) mod 10]+5*[(n+5) mod 10]-4*[(n+6) mod 10]+23*[(n+7) mod 10]+23*[(n+8) mod 10]-4*[(n+9) mod 10]}, with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), Aug 04 2008]
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CROSSREFS
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Adjacent sequences: A140896 A140897 A140898 this_sequence A140900 A140901 A140902
Sequence in context: A121168 A102375 A118270 this_sequence A021561 A093206 A070693
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KEYWORD
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nonn,uned
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AUTHOR
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Paul Curtz (bpcrtz(AT)free.fr), Jul 24 2008
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