42359

Properties

Appears in sequences

• Primes that remain prime through 3 iterations of function f(x) = 3x + 2.at n=32A023277
• Primes p such that 2*p+1 and ((2*p+1)^2 + 1)/2 = p^2 + (p+1)^2 are primes.at n=43A098717
• Primes of the form 8*k-1 such that 4*k-1 and 16*k-1 are also primes.at n=33A101792
• Indices of products of twin primes in the semiprimes.at n=22A131188
• Primes in the sequence A003294 of certain fourth powers bases.at n=31A134820
• Primes p such that p^3 +- (p+1) are primes.at n=35A137472
• Primes of the form Sum_{k=1..m} (m^k mod (m+k)).at n=28A156557
• Prime p such that p^5 + p^3 + p - 4 and p^5 + p^3 + p + 4 are primes.at n=36A243900
• Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 1 2 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 1 2 4 6 or 7.at n=1A252557
• T(n,k) = Number of (n+2) X (k+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 1 2 4 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 1 2 4 6 or 7.at n=29A252558
• Number of (2+2) X (n+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 1, 2, 4, 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 1, 2, 4, 6 or 7.at n=6A252560
• Primes equal to the sum of both two and three successive semiprimes.at n=32A255897
• Prime numbersat n=4428