80938

Appears in sequences

• Numbers k such that 75*2^k-1 is prime.at n=45A050563
• 30*a(n) is the gap between sexy prime triples in the n-th sexy prime triple triple whose initial term is 17.at n=27A090891
• Numbers k such that k = x + y, k' = x' + y' and k'' = x'' + y'', where k' and k'' are the first and second arithmetic derivatives of k.at n=18A293252
• Number T(n,k) of permutations p of [n] such that k is the maximum of the partial sums of the signed up-down jump sequence of 0,p; triangle T(n,k), k>=0, k<=n<=k*(k+1)/2, read by columns.at n=33A316293
• Number of mutual-visibility sets in the n-prism graph.at n=14A389184