Number of sequences of n integers p(i) i=0..n-1 with 0<=p(i)<=7*i and -7<p(i)-p(i-1)<=7.
A180912
Number of sequences of n integers p(i) i=0..n-1 with 0<=p(i)<=7*i and -7<p(i)-p(i-1)<=7.
Terms
- a(0) =1a(1) =8a(2) =91a(3) =1112a(4) =14168a(5) =184564a(6) =2439577a(7) =32572164a(8) =438101477a(9) =5925607074a(10) =80499964475
External references
- oeis: A180912