89892

Appears in sequences

• Expansion of e.g.f.: cosh(x)*cos(log(1+x)).at n=9A009174
• Number of nonnegative solutions of x1^2 + x2^2 + ... + x12^2 = n.at n=19A045853
• Let a(1)=3; for n > 1, let a(n) be the least positive integer k such that k > a(n-1), a(1)^2 + ... + a(n-1)^2 + k^2 is a square and the Pythagorean triple sqrt(a(1)^2 + ... + a(n-1)^2), a(n), sqrt(a(1)^2 + ... + a(n)^2) is primitive.at n=6A307077
• Number of n element multisets of the 12th roots of unity with zero sum.at n=29A321417
• Number of regions in a polygon whose boundary consists of n+2 equally spaced points around a semicircle and n+2 equally spaced points along the diameter (a total of 2n+2 points). See Comments for precise definition.at n=21A333519