21805

Appears in sequences

• Expansion of 1/((1-8*x)*(1-10*x)*(1-11*x)*(1-12*x)).at n=3A016093
• Number of orbits of length n under the map whose periodic points are counted by A001642.at n=21A060167
• Smallest m such that A065623(m) = n.at n=38A065624
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 11011-01110 pattern in any orientation.at n=14A147225
• Composite numbers coprime to 6 such that A179382(n) = A000265(n-1), the odd part of n-1.at n=34A225913
• Number of partitions of n such that m(greatest part) = m(1), where m = multiplicity.at n=49A240078
• Let p = n-th prime == 3 mod 8; a(n) = sum of quadratic residues mod p that are < p/2.at n=28A282721
• Number of minimal edge covers in the n-trapezohedral graph.at n=7A379550