The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
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!)
A200454 T(n,k)=Number of -k..k arrays x(0..n+1) of n+2 elements with zero sum and nonzero first and second differences 14
4, 10, 4, 26, 44, 6, 44, 142, 144, 10, 72, 342, 728, 486, 14, 102, 678, 2334, 3788, 1582, 22, 142, 1148, 5720, 16380, 19802, 5478, 34, 184, 1832, 12002, 50852, 115140, 103726, 18692, 52, 236, 2744, 22276, 127988, 451708, 820650, 548204, 64782, 80, 290, 3874 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Table starts
...4.....10.......26.........44..........72..........102...........142
...4.....44......142........342.........678.........1148..........1832
...6....144......728.......2334........5720........12002.........22276
..10....486.....3788......16380.......50852.......127988........278906
..14...1582....19802.....115140......451708......1375006.......3513884
..22...5478...103726.....820650.....4062384.....14923636......44716536
..34..18692...548204....5876818....36725772....163058296.....572857272
..52..64782..2916664...42324384...334032710...1791564880....7380022092
..80.223272.15576706..306098316..3050654456..19771609900...95496980144
.126.776430.83481240.2222013090.27965763262.219008350922.1240352594210
LINKS
EXAMPLE
Some solutions for n=4 k=3
..0....1...-1....1....1...-1....0....2...-3...-1...-1....0...-1...-1....3...-3
.-1...-3....2....3...-1....1...-1....0....3...-2....1...-2....3....3...-3....2
..3...-1...-1...-3....2...-1...-3...-1....1....0...-3....0....2....0...-2...-1
.-1....3....1...-1...-2....1....2...-3....2....1....0...-3...-2...-1....1....3
..1...-2...-3....2....1....2....0....0...-3....3....2....3....1...-3....0....0
.-2....2....2...-2...-1...-2....2....2....0...-1....1....2...-3....2....1...-1
CROSSREFS
Column 1 is twice A077419(n+2)
Sequence in context: A059136 A128505 A336988 * A303052 A003564 A347116
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Nov 18 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 June 17 09:44 EDT 2024. Contains 373444 sequences. (Running on oeis4.)