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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A243126 Number of compositions of n in which the maximal multiplicity of parts equals 9. 2
1, 0, 10, 10, 65, 120, 395, 890, 2320, 5401, 12857, 29435, 66955, 149455, 330042, 719882, 1554760, 3326365, 7009606, 14772370, 30835912, 63443345, 130298990, 266321547, 538824877, 1082905293, 2168501310, 4319287751, 8538816117, 16795672263, 32926171923 (list; graph; refs; listen; history; text; internal format)
OFFSET

9,3

LINKS

Alois P. Heinz, Table of n, a(n) for n = 9..1000

FORMULA

a(n) = A243087(n) - A243086(n) = A243081(n,9) - A243081(n,8).

MAPLE

b:= proc(n, i, p, k) option remember; `if`(n=0, p!, `if`(i<1, 0,

      add(b(n-i*j, i-1, p+j, k)/j!, j=0..min(n/i, k))))

    end:

a:= n-> b(n$2, 0, 9) -b(n$2, 0, 8):

seq(a(n), n=9..50);

CROSSREFS

Column k=9 of A242447.

Sequence in context: A056483 A056473 A241869 * A269921 A219797 A255744

Adjacent sequences:  A243123 A243124 A243125 * A243127 A243128 A243129

KEYWORD

nonn

AUTHOR

Alois P. Heinz, May 29 2014

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 19 04:17 EDT 2019. Contains 321311 sequences. (Running on oeis4.)