65651

Properties

Appears in sequences

• Number of 5-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero and first and second differences in -n..n.at n=29A209009
• Primes formed by concatenating k, k, and 1 for k >= 1.at n=17A210511
• Centered 13-gonal (or tridecagonal) primes.at n=21A262493
• Primes of the form 2^x + y (x >= 0 and 0 <= y < 2^x) such that all the numbers 2^(x+a) + (y-a) (0 < a <= y) are composite.at n=42A264866
• Numerator of the average distance among first n primes.at n=42A332094
• Array read by diagonals downwards: A(n,k) for n>=2 and k>=0 is the number of (n,k)-polyominoes counting as distinct different formations of transparent squares.at n=40A381057
• Primes having only {1, 5, 6} as digits.at n=33A385779
• Prime numbersat n=6558