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, 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

R. H. Hardin, Table of n, a(n) for n=1..100

Crossrefs

Sequence in context: A221765 A292842 A133271 * A266427 A239644 A099142

Adjacent sequences: A180900 A180901 A180902 * A180904 A180905 A180906

Keyword

nonn

Author

R. H. Hardin Sep 23 2010

Status

approved