

A179541


a(n) is the least possible smallest period attainable by the action of a periodic sequence of binary operations <+>,<> (see A179382,A179480), beginning with 2n1<+>1 or 2n1<>1


0



1, 1, 1, 1, 2, 2, 1, 1, 3, 2, 4
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OFFSET

2,5


COMMENTS

The minorizing sequence for all sequences of type A179382,A179480 with arbitrary periodic rotation of the binary operations <+>,<>.


LINKS

Table of n, a(n) for n=2..12.


EXAMPLE

Let n=12, 2n1=23. Considering periodic sequence <+>,<>,<+>,<>,..., we have 23<+>1=3, 23<>3=5, 23<+>5=7, 23<>7=1, 23<+>1=3,... Thus a(12)<=4. It is not difficult to verify that a(12)>3. Thus a(12)=4.


CROSSREFS

Cf. A179382 A179480
Sequence in context: A047110 A093869 A057431 * A057060 A198380 A152805
Adjacent sequences: A179538 A179539 A179540 * A179542 A179543 A179544


KEYWORD

nonn


AUTHOR

Vladimir Shevelev, Jul 18 2010


STATUS

approved



