login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A200034 Number of -4..4 arrays x(0..n-1) of n elements with sum zero and with zeroth through n-1st differences all nonzero 0
0, 8, 28, 218, 1074, 7384, 41228, 262004, 1565836, 9730070, 59336930, 368674288 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 4 of A200038

LINKS

Table of n, a(n) for n=1..12.

EXAMPLE

Some solutions for n=6

..4...-4....2....3....4....2....2...-1...-3....1....4....3...-2...-3....4....4

..2...-2...-3....1....2....4...-1...-3....4...-3...-3...-2....3...-2...-4...-1

..3....4....1....3...-3...-4....4....4....3....2...-4...-1...-4...-3...-1...-4

.-3....1...-2...-2....3....1...-3...-4...-4...-4....4....4...-1....3....4....3

.-4....2....3...-3...-2...-2....1....1...-2....1....3...-1....3....1...-2....1

.-2...-1...-1...-2...-4...-1...-3....3....2....3...-4...-3....1....4...-1...-3

CROSSREFS

Sequence in context: A058289 A152014 A316512 * A230702 A244613 A228281

Adjacent sequences:  A200031 A200032 A200033 * A200035 A200036 A200037

KEYWORD

nonn

AUTHOR

R. H. Hardin Nov 12 2011

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 June 6 14:04 EDT 2020. Contains 334827 sequences. (Running on oeis4.)