login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A124761 Number of falls for compositions in standard order. 5
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; refs; listen; history; internal format)
OFFSET

0,38

COMMENTS

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: A196049 A194821 A044934 * A156709 A081400 A131963

Adjacent sequences:  A124758 A124759 A124760 * A124762 A124763 A124764

KEYWORD

easy,nonn,tabf

AUTHOR

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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 15 08:20 EST 2012. Contains 205729 sequences.