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, 9, 117, 1665, 24843, 380805, 5941923, 93886185, 1497389568, 24055051863, 388666882798, 6309382040993, 102822842612560, 1681209772089665, 27566207388086092, 453095823002488325, 7463239601084222332

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 A346769

Adjacent sequences: A180901 A180902 A180903 * A180905 A180906 A180907

Keyword

nonn

Author

R. H. Hardin Sep 23 2010

Status

approved