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1, 2, 1, 4, -4, 7, -5, 8, -5, 4, -7, 1, -5, 5, -2, 4, -1, 4, -5, 2, -8, 4, -4, 7, -5, 8, -5, 4, -7, 1, -5, 5, -2, 4, -1, 4, -5, 2, -8, 4, -4, 7, -5, 8, -5, 4, -7, 1, -5, 5, -2, 4, -1, 4, -5, 2, -8, 4, -4, 7, -5, 8, -5, 4, -7, 1, -5, 5, -2, 4, -1, 4, -5, 2, -8, 4, -4, 7, -5, 8, -5, 4, -7, 1, -5, 5
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,2
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COMMENTS
| We compute the positive remainder modulo 9 and subtract 9 if A102055(n) is negative.
Appears to be periodic with period length 18 after the transitional first 3 elements. (This would imply only the same 6 digits appear as found in A141425.)
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FORMULA
| a(3n)+a(3n+1)+a(3n+2)= 4, 7, -2, -2, -2, 5 ever same six digits?
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MAPLE
| A102055 := proc(n) local k; if n = 0 then 1; else 1-add(A001469(k), k=1..n) ; end if; end proc:
A141446 := proc(n) local a; a := A102055(n) ; if a > 0 then a mod 9; else (a mod 9)-9; end if; end proc; # R. J. Mathar, Jul 07 2011
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CROSSREFS
| Cf. A141430.
Sequence in context: A093049 A081243 A127480 * A077965 A077967 A008312
Adjacent sequences: A141443 A141444 A141445 * A141447 A141448 A141449
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KEYWORD
| sign
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AUTHOR
| Paul Curtz (bpcrtz(AT)free.fr), Aug 07 2008
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