|
|
A264070
|
|
Number of (n+1)X(7+1) arrays of permutations of 0..n*8+7 with each element having index change +-(.,.) 0,0 0,1 or 1,2.
|
|
1
|
|
|
610, 75625, 15892745, 3057071776, 601052131669, 118020590202856, 23180312098708413, 4552817445649814704, 894213655660356295077, 175631478939257301328632, 34495577433083786070527245
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
FORMULA
|
Empirical: a(n) = 191*a(n-1) +1102*a(n-2) -7594*a(n-3) -38349*a(n-4) +38507*a(n-5) for n>8
|
|
EXAMPLE
|
Some solutions for n=2
..0..1..2..3.14..5..6..7...10..1..2.12..4..5.15..7....9..1..2..3..4..5..6..7
..8..9.19.20.12.23..4.15....8..0.19.21..3.22.14..6....8..0.10.20.22.23.14.15
.16.17.18.10.11.21.22.13...16.17.18..9.20.11.13.23...16.17.18.19.11.21.12.13
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|