|
|
A180903
|
|
Number of sequences of n integers p(i) i=0..n-1 with 0<=p(i)<=7*i and |p(i)-p(i-1)|<=7
|
|
1
|
|
|
1, 8, 92, 1156, 15226, 205990, 2836590, 39552570, 556668807, 7891281877, 112509947855, 1611636640353, 23175701167135, 334368287095731, 4837685812173771, 70162685549241499, 1019758730416577463
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
Paths down a n-high rectangular-grid right triangle with interior neighbor fanout 2*7+1
|
|
LINKS
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|