114674

Appears in sequences

• Number of labeled acyclic digraphs with n nodes containing exactly n-1 points of in-degree zero.at n=13A058877
• a(1)=2. For n >=2, a(n) = the least integer >= a(n-1) that is not coprime to both a(n-1)+1 and a(n-1).at n=38A140525
• a(n) = sigma(n*2^(n-1)).at n=12A176362
• Number of permutations of 1..n+5 with the number moved left exceeding the number moved right by n.at n=8A179572
• Least k such that n divides d(sigma(k)) (d = A000005).at n=33A276043
• Even integers k such that phi(sum of even divisors of k) = sum of odd divisors of k.at n=17A281707