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A022155
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Values of n at which Golay-Rudin-Shapiro sequence A020985 is negative.
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4
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3, 6, 11, 12, 13, 15, 19, 22, 24, 25, 26, 30, 35, 38, 43, 44, 45, 47, 48, 49, 50, 52, 53, 55, 59, 60, 61, 63, 67, 70, 75, 76, 77, 79, 83, 86, 88, 89, 90, 94, 96, 97, 98, 100, 101, 103, 104, 105, 106, 110, 115, 118, 120, 121, 122, 126, 131, 134, 139, 140
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| A020985(a(n)) = -1.
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REFERENCES
| J. Brillhart and P. Morton, A case study in mathematical research: the Golay-Rudin-Shapiro sequence, Amer. Math. Monthly, 103 (1996) 854-869.
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LINKS
| Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
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PROG
| (Haskell)
import Data.List (elemIndices)
a022155 n = a022155_list !! (n-1)
a022155_list = elemIndices (- 1) a020985_list
-- Reinhard Zumkeller, Jan 02 2012
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CROSSREFS
| Cf. AA203463 (complement).
Sequence in context: A183543 A028744 A028775 * A066157 A073159 A000419
Adjacent sequences: A022152 A022153 A022154 * A022156 A022157 A022158
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KEYWORD
| nonn
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AUTHOR
| Robert G. Wilson v (rgwv(AT)rgwv.com)
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