27267

Appears in sequences

• Indices of terms in A091074 which are prime numbers.at n=40A091076
• Number of lower triangles of an n X n -3..3 array with all row and column sums zero.at n=4A195517
• T(n,k) = Number of lower triangles of an n X n -k..k array with all row and column sums zero.at n=25A195522
• Number of lower triangles of a 5 X 5 -n..n array with all row and column sums zero.at n=2A195523
• Number T(n,k) of set partitions of [n] where k is minimal such that for each block b the smallest integer interval containing b has at most k elements; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=63A276727
• Number of set partitions of [n] such that for each block b the smallest integer interval containing b has at most eight elements and for at least one block c the smallest integer interval containing c has exactly eight elements.at n=2A320558