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A180904 Number of sequences of n integers p(i) i=0..n-1 with 0<=p(i)<=8*i and |p(i)-p(i-1)|<=8 1
1, 9, 117, 1665, 24843, 380805, 5941923, 93886185, 1497389568, 24055051863, 388666882798, 6309382040993, 102822842612560, 1681209772089665, 27566207388086092, 453095823002488325, 7463239601084222332 (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*8+1

Column 8 of A180906

LINKS

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

CROSSREFS

Sequence in context: A221442 A196663 A292843 * A062994 A059967 A304184

Adjacent sequences:  A180901 A180902 A180903 * A180905 A180906 A180907

KEYWORD

nonn

AUTHOR

R. H. Hardin Sep 23 2010

STATUS

approved

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Last modified January 22 04:27 EST 2020. Contains 331133 sequences. (Running on oeis4.)