101419

Properties

Appears in sequences

• a(n) = T(n,0) + T(n,1) + ... + T(n,[ n/2 ]), T given by A026648.at n=16A026656
• Primes in A059504.at n=17A109775
• Number of n X n binary arrays symmetric under horizontal reflection with all ones connected only in a 1000-1100-0111 pattern in any orientation.at n=11A146390
• Primes n that are concatenation of two 3-digit primes p<q.at n=10A168529
• Number of (n+2)X3 0..2 arrays with each 3X3 subblock having sum 9.at n=2A187640
• Number of (n+2)X5 0..2 arrays with each 3X3 subblock having sum 9.at n=0A187642
• T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock having sum 9.at n=3A187645
• T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with each 3X3 subblock having sum 9.at n=5A187645
• Slowest-growing sequence of odd primes whose reciprocals sum to 1.at n=9A225669
• Primes that are the concatenation of two 3-digit primes.at n=10A255976
• Number of integer partitions of the n-th Fermi-Dirac prime into Fermi-Dirac primes.at n=27A316210
• Primes using all the square digits {0, 1, 4, 9} and no others.at n=17A331346
• Prime numbersat n=9713