Number of sequences of n integers p(i) i=0..n-1 with 0<=p(i)<=7*i and |p(i)-p(i-1)|<=7.

A180903

Number of sequences of n integers p(i) i=0..n-1 with 0<=p(i)<=7*i and |p(i)-p(i-1)|<=7.

Terms

    a(0) =1a(1) =8a(2) =92a(3) =1156a(4) =15226a(5) =205990a(6) =2836590a(7) =39552570a(8) =556668807a(9) =7891281877a(10) =112509947855

External references