120919

Properties

Appears in sequences

• Class 9- primes.at n=3A081428
• Numbers n such that there is no other number k for which A155043(k) = A155043(n).at n=22A262509
• Number T(n,k) of permutations p of [n] with no fixed points such that |{ j : |p(j)-j| = 1 }| = k; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.at n=59A323671
• a(n) is the smallest positive integer which can be represented as the sum of distinct nonzero n-gonal pyramidal numbers in exactly n ways, or 0 if no such integer exists.at n=36A350210
• Prime numbersat n=11382