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Revision History for A355413 (Bold, blue-underlined text is an addition; faded, red-underlined text is a deletion.)

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Lexicographically earliest infinite sequence of positive numbers such that, for n>1, a(n) AND a(n-1) is distinct from all previous AND operations between adjacent terms, where AND is the binary AND operator.
(history; published version)
#13 by Michael De Vlieger at Fri Jul 01 09:38:25 EDT 2022
STATUS

proposed

approved

#12 by Scott R. Shannon at Fri Jul 01 07:09:51 EDT 2022
STATUS

editing

proposed

#11 by Scott R. Shannon at Fri Jul 01 07:09:48 EDT 2022
CROSSREFS
STATUS

proposed

editing

#10 by Scott R. Shannon at Fri Jul 01 07:00:21 EDT 2022
STATUS

editing

proposed

#9 by Scott R. Shannon at Fri Jul 01 06:56:37 EDT 2022
KEYWORD

nonn,changed,base

#8 by Scott R. Shannon at Fri Jul 01 06:54:23 EDT 2022
NAME

Lexicographically earliest infinite sequence of positive numbers such that, for n>1, a(n) AND a(n-1) is distinct from all previous AND operations between adjacent pairs, terms, where AND is the binary AND operator.

#7 by Scott R. Shannon at Fri Jul 01 06:53:00 EDT 2022
EXAMPLE

a(3) = 3 as a(2) = 3 and 3 AND 3 = 3, which has not occurred earlier for any AND's between adjacent terms. Note that a(3) cannot equal 2 = 10_2 as the result of any subsequent AND operation with 2 would result in an AND value be 0 or 2, both of which have already seenoccurred.

#6 by Scott R. Shannon at Fri Jul 01 06:50:01 EDT 2022
COMMENTS

Each term must be chosen so that a subsequent term can always been found. This implies, for example, no power of 2 can ever be a term as the result of 2 an AND operation between such a number and any following number will be either 0 or the power of 2, both of which have already appeared as the result of AND operations.

#5 by Scott R. Shannon at Fri Jul 01 06:46:15 EDT 2022
COMMENTS

Every a(n) where n is odd is a fixed point.

#4 by Scott R. Shannon at Fri Jul 01 06:42:55 EDT 2022
NAME

wip

Lexicographically earliest infinite sequence of positive numbers such that, for n>1, a(n) AND a(n-1) is distinct from all previous AND operations between adjacent pairs, where AND is the binary AND operator.

COMMENTS

Each term must be chosen so that a subsequent term can always been found. This implies, for example, no power of 2 can ever be a term as the result of 2 AND any following number will be either 0 or 2, both of which have already appeared.

EXAMPLE

a(3) = 3 as a(2) = 3 and 3 AND 3 = 3, which has not occurred earlier for any AND's between adjacent terms. Note that a(3) cannot equal 2 = 10_2 as the result of any subsequent AND operation with 2 would result in an AND value already seen.

CROSSREFS