49747

Properties

Appears in sequences

• Number of arrangements of n+1 numbers x(i) in -3..3 with the sum of x(i)*x(i+1) equal to zero.at n=5A188352
• T(n,k)=Number of arrangements of n+1 numbers x(i) in -k..k with the sum of x(i)*x(i+1) equal to zero.at n=33A188358
• Number of arrangements of 7 numbers x(i) in -n..n with the sum of x(i)*x(i+1) equal to zero.at n=2A188362
• Primes of the form p^2 + 2q^2 with p and q odd primes.at n=40A201613
• Primes of the form p^2 + 18, where p is prime.at n=22A201688
• Smallest number requiring n 1's to build using +, * and -.at n=34A255641
• Primes p such that p = q^2 + 2*r^2 where q and r are also primes.at n=41A260553
• Primes having only {4, 7, 9} as digits.at n=33A261183
• Numbers that are the sum of seven fourth powers in exactly nine ways.at n=34A345831
• Prime numbersat n=5109