31774

Appears in sequences

• Semiprimes in A054567.at n=27A113692
• Number of partitions p of n such that (number of numbers of the form 5k + 1 in p) is a part of p.at n=41A241550
• a(n) = smallest m such that b(m) is prime and b(m+2)/b(m) = prime(n), where b() = A098550().at n=6A251543
• Number of (n+2)X(1+2) 0..4 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime.at n=1A252033
• Number of (n+2)X(2+2) 0..4 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime.at n=0A252034
• T(n,k)=Number of (n+2)X(k+2) 0..4 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime.at n=1A252039
• T(n,k)=Number of (n+2)X(k+2) 0..4 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime.at n=2A252039
• Number of (n+1) X (3+1) 0..1 arrays with each 2 X 2 subblock having clockwise pattern 0001 0101 or 0111.at n=4A259292
• Number of (n+1)X(5+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0001 0101 or 0111.at n=2A259294
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0001 0101 or 0111.at n=23A259297
• T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0001 0101 or 0111.at n=25A259297