20244

Appears in sequences

• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite MFS = ZSM-57 H1.5[Al1.5Si34.5O72] starting with a T7 atom.at n=13A019174
• Numbers k such that k | sigma_8(k).at n=20A055712
• Diagonal of array A085205.at n=19A085228
• a(n) = Sum_{k=0..floor(n/3)} C(n-k,2*k) * 4^(n-3*k).at n=7A099781
• Let f(k) = exp(Pi*sqrt(k)); sequence gives numbers k such that ceiling(f(k)) - f(k) < 1/10^3.at n=33A127022
• Maximum number of rational points on a smooth absolutely irreducible projective curve of genus 2 over the field F_3^n.at n=8A169878
• a(n) = 2^n mod n^3.at n=28A233442
• Integers n where n^3 + (n+1)^3 is a Taxicab number A001235.at n=12A259836
• Total number of inversions in all permutations of [n] where the descent set equals the subset of odd elements in [n-1].at n=8A337193
• The number of partitions of n without repeated odd parts having more even parts than odd parts.at n=51A340623
• Number of ways to write n as an ordered sum of seven positive Fibonacci numbers (with a single type of 1).at n=40A357694
• E.g.f. satisfies A(x) = 1 + x^3/6*exp(x*A(x)).at n=9A371066