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A154815
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Period 6: repeat 8, 7, 4, 5, 2, 1.
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1
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8, 7, 4, 5, 2, 1, 8, 7, 4, 5, 2, 1, 8, 7, 4, 5, 2, 1, 8, 7, 4, 5, 2, 1, 8, 7, 4, 5, 2, 1, 8, 7, 4, 5, 2, 1, 8, 7, 4, 5, 2, 1, 8, 7, 4, 5, 2, 1, 8, 7, 4, 5, 2, 1, 8, 7, 4, 5, 2, 1, 8, 7, 4, 5, 2, 1
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,1
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COMMENTS
| Obtained through reversion of the period in A153990, or by taking a half period of A154811.
Shares digits with other 6-periodic sequences, see the list in A153130.
Also the decimal expansion of the constant 97169/111111 [R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 23 2009]
Terms of the simple continued fraction of 2710/(sqrt(4579599)-1807). [From Paolo P. Lava (paoloplava(AT)gmail.com), Feb 17 2009]
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FORMULA
| a(n)=(1/15)*{-13*(n mod 6)+7*[(n+1) mod 6]+12*[(n+2) mod 6]+2*[(n+3) mod 6]+12*[(n+4) mod 6]+7*[(n+5) mod 6]}, with n>=0 [From Paolo P. Lava (paoloplava(AT)gmail.com), Jan 16 2009]
a(n) = (8*A153990(n)) mod 9.
G.f.: (8+7x+4x^2+5x^3+2x^4+x^5)/((1-x)(1+x)(1+x+x^2)(x^2-x+1)). [R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 23 2009]
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CROSSREFS
| Sequence in context: A193716 A196914 A072102 * A085848 A008960 A077744
Adjacent sequences: A154812 A154813 A154814 * A154816 A154817 A154818
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KEYWORD
| nonn,easy
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AUTHOR
| Paul Curtz (bpcrtz(AT)free.fr), Jan 15 2009
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EXTENSIONS
| Edited by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jan 23 2009
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