18987

Appears in sequences

• Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=1, r=5, I={0,3}.at n=28A079965
• Numbers k such that A(k+1) = A(k) + 1, where A() = A005101() are the abundant numbers.at n=16A169822
• Triangle T(n,m) read by rows: the matrix product A130595 * A156919.at n=23A185412
• Triangle T(n,m) read by rows: the matrix product A130595 * A156919.at n=25A185412
• Smooth Lyndon words with 5 colors.at n=11A215332
• Number of 0..n arrays of length 6 with each element differing from at least one neighbor by 1 or less.at n=7A221598
• Number of partitions p of n such that (number of even numbers in p) >= 2*(number of odd numbers in p).at n=48A241644
• Number of squarefree parts in the partitions of n into 9 parts.at n=38A309463