29893

Appears in sequences

• a(n) = 2n*a(n-1) + 1 with a(0)=0.at n=6A056541
• a(n) = prime(n)*prime(n+2).at n=38A090076
• a(n) = prime(n) times the n-th nonnegative noncomposite.at n=40A176098
• Equals two maps: number of nX2 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, vertical and antidiagonal neighbors in a random 0..3 nX2 array.at n=7A220529
• T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, vertical and antidiagonal neighbors in a random 0..3 nXk array.at n=37A220532
• T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, vertical and antidiagonal neighbors in a random 0..3 nXk array.at n=43A220532
• T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, vertical and antidiagonal neighbors in a random 0..2 nXk array.at n=37A221188
• T(n,k)=Equals two maps: number of nXk binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, vertical and antidiagonal neighbors in a random 0..2 nXk array.at n=43A221188
• a(n) = smallest index m such that smallest prime factor of m-th triangular number is prime(n).at n=38A226442
• Sequence of pairwise relatively prime numbers of class P_5 (see comment in A275246).at n=19A275249
• Numbers k such that (7*10^k - 439)/9 is prime.at n=19A293029