67489

Properties

Appears in sequences

• Numbers n such that (15^n + 1)/16 is a prime.at n=6A057181
• Primes with 23 as smallest positive primitive root.at n=20A061335
• a(1) = a(2) = 1; for n>2, a(n) = 4*a(n-1) + 3*a(n-2).at n=8A086901
• Primes that become squares when prefixed with a 6.at n=4A167739
• Number of (n+1)X(6+1) 0..2 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.at n=0A234120
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.at n=15A234122
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.at n=20A234122
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 645", based on the 5-celled von Neumann neighborhood.at n=36A273316
• (Number of 4 X 4 pandiagonal magic squares with distinct positive entries less than n)/384.at n=39A317252
• Primes such that x^16 = 2 has a solution in Z/pZ, but x^32 = 2 does not.at n=26A373468
• Prime numbersat n=6723