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A142151 a(n) = OR{k XOR (n-k): 0<=k<=n}. 6
0, 1, 2, 3, 6, 5, 6, 7, 14, 13, 14, 11, 14, 13, 14, 15, 30, 29, 30, 27, 30, 29, 30, 23, 30, 29, 30, 27, 30, 29, 30, 31, 62, 61, 62, 59, 62, 61, 62, 55, 62, 61, 62, 59, 62, 61, 62, 47, 62, 61, 62, 59, 62, 61, 62, 55, 62, 61, 62, 59, 62, 61, 62, 63, 126, 125, 126, 123, 126, 125 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

a(2*n) = 2*(A062383(n)-1);

A023416(a(n)) <= 1.

LINKS

R. Zumkeller, Table of n, a(n) for n = 0..10000

R. Zumkeller, Logical Convolutions

PROG

(Haskell)

import Data.Bits (xor, (.|.))

a142151 :: Integer -> Integer

a142151 = foldl (.|.) 0 . zipWith xor [0..] . reverse . enumFromTo 1

-- Reinhard Zumkeller, Mar 31 2015

CROSSREFS

Cf. A003817, A000004, A142149, A086099, A142150, A001477, A089633.

Sequence in context: A322857 A051377 A057723 * A003968 A076734 A242314

Adjacent sequences:  A142148 A142149 A142150 * A142152 A142153 A142154

KEYWORD

nonn,hear,look

AUTHOR

Reinhard Zumkeller, Jul 15 2008

STATUS

approved

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Last modified March 18 19:58 EDT 2019. Contains 321293 sequences. (Running on oeis4.)