22166

Appears in sequences

• Coordination sequence for Cr3Si, Cr position.at n=38A009928
• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite DOH = Dodecasil 1H [Si34O68].qR starting with a T2 atom.at n=13A019114
• T(2n,n+2), T given by A026780.at n=6A026895
• Square root of A030693.at n=16A030694
• Digital sum of the Fermat number 2^(2^n) + 1.at n=14A108301
• a(n) is the number of n-cell polyiamonds (triangular polyominoes) with perimeter n+2.at n=13A131481
• a(n) = 280*C(n,9)+10*C(n,6)+6*C(n,4)+C(n,3)+1 where C = binomial.at n=10A144841
• a(n) = Sum_{d|n} A007955(d) where A007955(m) = product of divisors of m.at n=27A175317
• a(n) = prime(n)^2 - n.at n=34A182174
• Smallest number k such that k^2 begins with n^3.at n=16A197722
• Triangle of coefficients of polynomials v(n,x) jointly generated with A210755; see the Formula section.at n=40A210756
• Numbers n such that n^1024 + (n+1)^1024 is prime.at n=37A274234