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A145577 A045944 mod 9. Period 9: repeat 0,5,7,6,2,4,3,8,1. 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, 0, 5, 7, 6, 2, 4, 3, 8, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

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.

LINKS

Table of n, a(n) for n=0..35.

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, Oct 14 2008]

CROSSREFS

Sequence in context: A139428 A303574 A063005 * A144478 A059249 A175294

Adjacent sequences:  A145574 A145575 A145576 * A145578 A145579 A145580

KEYWORD

nonn

AUTHOR

Paul Curtz, Oct 13 2008

STATUS

approved

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Last modified August 20 10:05 EDT 2019. Contains 326149 sequences. (Running on oeis4.)