68769

Appears in sequences

• Numbers k such that 2*3^k + 7 is prime.at n=17A059326
• Number of multisets of exactly n partitions of positive integers into distinct parts with total sum of parts equal to 2n.at n=21A285230
• T(n,k)=Number of nXk 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 neighboring 1s.at n=58A297224
• Number of 4Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 neighboring 1s.at n=7A297226
• a(n) = Sum_{k=1..n} phi(gcd(k, n))^(n/gcd(k, n) - 1).at n=39A342542