135960

Appears in sequences

• a(n) = Catalan(n)*(3^(n+1) - 2^(n+1) + 1)/2.at n=6A063017
• Numbers that can be expressed as the difference of the squares of primes in exactly eight distinct ways.at n=24A092004
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, 0, 0), (0, 0, 1), (1, 0, 1), (1, 1, -1)}.at n=9A150423
• a(n) = 8000*n - 40.at n=16A157660
• Number of binary Lyndon words of length n having a conjugate at Hamming distance 2.at n=35A226893
• a(n) = Sum_{k=0..n} binomial(n,k) * (2^k + 3)^k.at n=4A251184
• Number of 2 X 2 matrices with entries in {0,1,...,n} and even determinant with no entry repeated.at n=22A277044