71861

Properties

Appears in sequences

• Triangle, read by rows, of permutations of length n with k white global corners.at n=38A213166
• Lesser of two consecutive primes, p < q, such that p*q + p - q and p*q - p + q are also consecutive primes.at n=26A225726
• a(n) = (1/n) times the n-th derivative of the fifth tetration of x (power tower of order 5) x^^5 at x=1.at n=7A295105
• Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=7A300636
• Numbers k such that 123456789*10^k+1 is prime.at n=19A322985
• Primes p such that the 3 X 3 matrix with components (row by row) prime(k+m), 0 <= m <= 8 has zero determinant, where p = prime(k).at n=11A337160
• Prime numbersat n=7112