67427

Properties

Appears in sequences

• Primes that remain prime through 4 iterations of function f(x) = 9x + 4.at n=21A023325
• Lower twin primes with lower twin prime index.at n=34A088460
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, -1, 1), (-1, 0, 0), (1, 0, -1), (1, 1, 1)}.at n=9A149607
• Primes of the form 9n^2-8n+2.at n=17A154253
• Number of (n+2) X (1+2) 0..1 arrays with no 3 x 3 subblock diagonal sum 0 or 1 and no antidiagonal sum 0 or 1 and no row sum 0 or 1 and no column sum 0 or 1.at n=10A255020
• Primes p such that p+6, p-6, 2*p+3 and 2*p-3 are prime.at n=34A356079
• Integers k such that 28*phi(29*197^3*k) is not a totient number where phi is the totient function.at n=17A361396
• Prime numbersat n=6716