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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
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
CROSSREFS
Sequence in context: A157233 A292350 A188976 * A341964 A083305 A222146
KEYWORD
nonn
AUTHOR
R. H. Hardin Sep 23 2010
STATUS
approved