41706

Appears in sequences

• Number of ordered quadruples of integers from [ 2,n ] with no global factor.at n=30A015638
• Triangle formed by multiplying Stirling numbers of 2nd kind S2(n,m) (A008277) by m+1.at n=40A069138
• Minimal m such that n^n-m and n^n+m are both primes, or -1 if there is no such m.at n=41A075468
• Smallest k such that p^p -+ k is prime, where p=prime(n).at n=13A157719
• T(n,k) is the number of connected posets of n unlabeled elements with k covering relations (n>=1, k>=0). Triangle read by rows.at n=69A342590