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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
OFFSET
1,2
COMMENTS
Paths down a n-high rectangular-grid right triangle with interior neighbor fanout 2*7+1
Column 7 of A180906
LINKS
CROSSREFS
Sequence in context: A221765 A292842 A133271 * A266427 A239644 A099142
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 23 2010
STATUS
approved