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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A077048 Doubly restricted composition numbers: number of compositions of [n^2/2] into up to n positive integers each no more than n. 3
1, 1, 2, 6, 44, 350, 4292, 57036, 996088, 18661152, 424241102, 10266964015, 287927722315, 8541887839459, 285144784116376, 10016752944160536, 388044155110294856, 15749295719801313452, 694726457246902921502 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..18.

Index entries for sequences related to compositions

FORMULA

Similar in magnitude to A077045.

EXAMPLE

a(3)=6 since the number of compositions of [3^2/2]=4 into up to 3 positive integers each no more than 3 are: 1+1+2, 1+2+1, 1+3, 2+1+1, 2+2, 3+1.

CROSSREFS

Cf. A029895, A077045, A077046, A077047.

Sequence in context: A077259 A319112 A136589 * A277479 A120594 A038180

Adjacent sequences:  A077045 A077046 A077047 * A077049 A077050 A077051

KEYWORD

nonn

AUTHOR

Henry Bottomley, Oct 22 2002

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 November 18 22:36 EST 2019. Contains 329305 sequences. (Running on oeis4.)