53484

Appears in sequences

• Numbers k such that x^k + x + 1 is irreducible over GF(2).at n=37A002475
• Number of ordered quadruples of integers from [ 1,n ] with no common factors between triples.at n=36A015635
• Number of (w,x,y,z) with all terms in {0,...,n} and (least gapsize)=2.at n=23A212895
• a(n) is the number of regular k-gons in three dimensions with all k vertices (x,y,z) in the set {1,2,...,n}^3.at n=9A338323
• a(n) is the number of subsets of the first n primes whose sum is not a prime.at n=16A364535