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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A011813 M-sequences from multicomplexes on 4 variables with all monomials of degree 5 but none of degree larger than n. 0
0, 0, 0, 0, 0, 1, 85, 4699, 219836, 9595906, 409867615, 17589965248, 770635739545, 34813976611381, 1632431803786770, 79803825438459069, 4080007508711841376, 218627996809373217066, 12298853131687073056568 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,7

REFERENCES

S. Linusson, The number of M-sequences and f-vectors, Combinatorica, 19 (1999), 255-266.

LINKS

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

FORMULA

a(n) = Sum_{k=5..n} L(4, n, k) where L(p, n, k) = Sum_{i=k..n} L(p-1, n, i) * L(p, i-1, k-1) with boundary conditions L(p, n, n) = L(p, n, -1) = 1 (p >= 0, n >= -1), L(0, n, k) = 0 (0 <= k < n) [from Linusson]. - Sean A. Irvine, Jun 28 2018

CROSSREFS

Sequence in context: A158796 A201796 A093285 * A006106 A015338 A181015

Adjacent sequences:  A011810 A011811 A011812 * A011814 A011815 A011816

KEYWORD

nonn

AUTHOR

Svante Linusson (linusson(AT)math.kth.se)

EXTENSIONS

Offset corrected by Sean A. Irvine, Jun 28 2018

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 April 19 20:04 EDT 2019. Contains 322291 sequences. (Running on oeis4.)