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A145577
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A045944 mod 9. Period 9: repeat 0,5,7,6,2,4,3,8,1.
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1
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0, 5, 7, 6, 2, 4, 3, 8, 1, 0, 5, 7, 6, 2, 4, 3, 8, 1, 0, 5, 7, 6, 2, 4, 3, 8, 1, 0, 5, 7, 6, 2, 4, 3, 8, 1
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| Also 9-tuple with 1, 0, 5, 7, 6, 2, 4, 3, 8 = A144478 or b(n) in A144478 or A144478(n+1). Also from A005563, A061037, A061039, A061041, A061043, A061045, A061047, A061049, Lyman to Hansen-Strong and after s-th spectra of hydrogen.
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FORMULA
| a(n)=(1/9)*{2*(n mod 9)+8*[(n+1) mod 9]-4*[(n+2) mod 9]+2*[(n+3) mod 9]-[(n+4) mod 9]+5*[(n+5) mod 9]+2*[(n+6) mod 9]-[(n+7) mod 9]-4*[(n+8) mod 9]}, with n>=0 [From Paolo P. Lava (paoloplava(AT)gmail.com), Oct 14 2008]
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CROSSREFS
| Sequence in context: A177735 A139428 A063005 * A144478 A059249 A175294
Adjacent sequences: A145574 A145575 A145576 * A145578 A145579 A145580
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KEYWORD
| nonn
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AUTHOR
| Paul Curtz (bpcrtz(AT)free.fr), Oct 13 2008
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