login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A202510 Number of zero-sum -7..7 arrays of n elements with first through third differences also in -7..7 1
1, 7, 57, 297, 1785, 11015, 68781, 436919, 2782455, 17852623, 114949893, 742430377, 4811939259, 31282061157, 203951966061, 1333111663347, 8732654184777, 57311401737559, 376739449264935, 2480070264283519, 16347300910687523 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 7 of A202511
LINKS
EXAMPLE
Some solutions for n=7
..7....5...-4....3...-2....5....1....7....7...-2...-6....5....1...-5...-1....5
..3....4...-1....0....4...-1....5....6....5....1...-2....2...-3...-7....2....0
..0....1....3...-3....5...-2....6....2....3....2....1...-2...-3...-3....2...-2
.-5....1....2...-3....0...-2....2...-3....0....2....0...-3....1....3....2....1
.-6....0....2...-1...-5...-3...-1...-7...-3...-1...-1...-4....4....7....0....2
.-2...-4....1....0...-3....0...-6...-6...-5...-1....3...-2....2....6....0...-1
..3...-7...-3....4....1....3...-7....1...-7...-1....5....4...-2...-1...-5...-5
CROSSREFS
Sequence in context: A274721 A180817 A201438 * A042187 A201872 A218587
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 20 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 | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 2 00:03 EST 2024. Contains 370447 sequences. (Running on oeis4.)