Number of sequences of n integers p(i) i=0..n-1 with 0<=p(i)<=9*i and |p(i)-p(i-1)|<=9.
A180905
Number of sequences of n integers p(i) i=0..n-1 with 0<=p(i)<=9*i and |p(i)-p(i-1)|<=9.
Terms
- a(0) =1a(1) =10a(2) =145a(3) =2305a(4) =38425a(5) =658150a(6) =11475967a(7) =202638268a(8) =3611795992a(9) =64844177233
External references
- oeis: A180905