49184

Appears in sequences

• Number of subsets of {1, ..., n} that are double-free but not sum-free.at n=19A088810
• a(n) = n*(4*n^2 + n - 1)/2.at n=28A125200
• Numbers k such that A206369(k) = A206369(k + 1).at n=30A206368
• Number of (4+2) X (n+2) 0..3 arrays with every consecutive three elements in every row and diagonal having exactly two distinct values, and in every column and antidiagonal not having exactly two distinct values, and new values 0 upwards introduced in row major order.at n=32A252723
• Numbers n for which A019565(n) <= A087207(n) < n.at n=16A286612
• Triangle T(m,k) read by rows, where T(m,k) is the number of ways in which 1 <= k <= m positions can be picked in an m X m square grid such that the picked positions have a line symmetry.at n=32A291718
• Number of integer partitions of n whose multiplicities appear with relatively prime multiplicities.at n=41A319160