176609

Properties

Appears in sequences

• Smaller member of a twin prime pair with a triangular sum.at n=26A086816
• Primes p such that (12*p - 1, 12*p + 1) and (18*p - 1, 18*p + 1) are twin primes.at n=21A138660
• Fill an array by antidiagonals upwards; in the top left cell enter a(0)=1; thereafter, in the n-th cell, enter the sum of the entries of those earlier cells that can be seen from that cell.at n=34A279212
• Primes p such that p+2, p*(p+1)/2-2 and p*(p+1)/2+2 are also primes.at n=37A349336
• Prime numbersat n=16054