81135
domain: N
Appears in sequences
- a(n) = Sum{a(k): k=0,1,2,...,n-3,n-1}; a(n-2) is not a summand; 2 initial terms required.at n=20A049855
- Multiples of 9 in which there is no common digit in successive terms.at n=32A083497
- Number of length-5 0..n arrays with no following elements greater than or equal to the first repeated value.at n=8A267234