|
|
A180911
|
|
Number of sequences of n integers p(i) i=0..n-1 with 0<=p(i)<=6*i and -6<p(i)-p(i-1)<=6
|
|
1
|
|
|
1, 7, 69, 728, 7996, 89712, 1020651, 11723768, 135611317, 1576988939, 18414581185, 215742738765, 2534467738774, 29840979652015, 352014007477710, 4159154152175656, 49209645681971673, 582929349589746292
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
Paths down a n-high staggered-grid minimally right-leaning right triangle with interior neighbor fanout 2*6
|
|
LINKS
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|