A180913 Number of sequences of n integers p(i) i=0..n-1 with 0<=p(i)<=8*i and -8<p(i)-p(i-1)<=8

1, 9, 116, 1611, 23354, 346392, 5215708, 79355229, 1216613579, 18760964625, 290630582210, 4518800966943, 70471597046192, 1101783607336424, 17262385062541884, 270952977605157692, 4259594371932890237

Offset

1,2

Comments

Paths down a n-high staggered-grid minimally right-leaning right triangle with interior neighbor fanout 2*8

Column 8 of A180915

Links

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

Crossrefs

Sequence in context: A157233 A292350 A188976 * A341964 A083305 A222146

Adjacent sequences: A180910 A180911 A180912 * A180914 A180915 A180916

Keyword

nonn

Author

R. H. Hardin Sep 23 2010

Status

approved