269545

Appears in sequences

• Pisot sequence L(6,7).at n=30A048585
• Pisot sequence L(7,9).at n=29A048589
• Numbers n for which phi(n)=sigma(n'), where phi is the Euler totient function, sigma is the sum of divisors and n' the arithmetic derivative of n.at n=23A189057
• Number of n X 3 integer arrays with each element equal to the number of horizontal and vertical neighbors differing from itself by exactly one.at n=33A266076