A180901 Number of sequences of n integers p(i) i=0..n-1 with 0<=p(i)<=5*i and |p(i)-p(i-1)|<=5

1, 6, 51, 471, 4556, 45241, 457147, 4676643, 48284749, 502090660, 5250783473, 55167333273, 581857386838, 6156977412343, 65332762153578, 694934786528758, 7407549097269370, 79106803303241485, 846197071753525877

Offset

1,2

Comments

Paths down a n-high rectangular-grid right triangle with interior neighbor fanout 2*5+1

Column 5 of A180906

Links

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

Crossrefs

Sequence in context: A356394 A202754 A363112 * A199685 A225615 A002295

Adjacent sequences: A180898 A180899 A180900 * A180902 A180903 A180904

Keyword

nonn

Author

R. H. Hardin Sep 23 2010

Status

approved