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A124764 Number of non-falls (levels or rises) for compositions in standard order. +0
6
0, 0, 0, 1, 0, 0, 1, 2, 0, 0, 1, 1, 1, 1, 2, 3, 0, 0, 0, 1, 1, 1, 1, 2, 1, 1, 2, 2, 2, 2, 3, 4, 0, 0, 0, 1, 1, 0, 1, 2, 1, 1, 2, 2, 1, 1, 2, 3, 1, 1, 1, 2, 2, 2, 2, 3, 2, 2, 3, 3, 3, 3, 4, 5, 0, 0, 0, 1, 0, 0, 1, 2, 1, 1, 1, 1, 1, 1, 2, 3, 1, 1, 1, 2, 2, 2, 2, 3, 1, 1, 2, 2, 2, 2, 3, 4, 1, 1, 1, 2, 2, 1, 2, 3, 2 (list; graph; listen)
OFFSET

0,8

COMMENT

The standard order of compositions is given by A066099.

FORMULA

a(n) = A124760(n) + A124762(n)

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 1

0 0 1 2

CROSSREFS

Cf. A066099, A124760, A124761, A124762, A124763, A011782 (row lengths), A045883 (row sums), A124769.

Sequence in context: A037844 A037880 A140698 this_sequence A151899 A079632 A002654

Adjacent sequences: A124761 A124762 A124763 this_sequence A124765 A124766 A124767

KEYWORD

easy,nonn,tabf

AUTHOR

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

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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