140504

Appears in sequences

• Numbers k such that 51*2^k+1 is prime.at n=44A032375
• Denominators of continued fraction convergents to sqrt(675).at n=7A042299
• Chebyshev polynomial of the second kind U(3,n).at n=26A144138
• Numbers n such that n and n+1 both have 32 divisors.at n=7A274807
• a(n) = Sum_{k=0..n} (-1)^k * binomial(n+k-1,k) * binomial(5*n-k-1,n-k).at n=6A370105
• a(n) = sqrt((A114052(n)^2 - 1)/27)/5.at n=4A370188