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A124761 Number of falls for compositions in standard order. +0
6
0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 1, 0, 2, 1, 1, 0, 1, 0, 1, 1, 2, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 2, 1, 1, 0, 1, 1, 2, 1, 2, 1, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 2, 1, 2, 1, 2, 1, 1, 0, 1, 1, 1, 0, 2, 1, 1, 0 (list; graph; listen)
OFFSET

0,38

COMMENT

The standard order of compositions is given by A066099.

FORMULA

For a composition b(1),...,b(k), a(n) = Sum_{1<=i=1<k, b(i)>b(i+1)} 1.

EXAMPLE

Composition number 11 is 2,1,1; 2>1<=1, so a(11) = 1.

The table starts:

0

0

0 0

0 1 0 0

CROSSREFS

Cf. A066099, A124760, A124762, A124763, A124764, A011782 (row lengths), A045883 (row sums), A124766.

Sequence in context: A144451 A090464 A044934 this_sequence A156709 A081400 A131963

Adjacent sequences: A124758 A124759 A124760 this_sequence A124762 A124763 A124764

KEYWORD

easy,nonn,tabf

AUTHOR

Franklin T. Adams-Watters (FrankTAW(AT)Netscape.net), Nov 06 2006

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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