1396395

Appears in sequences

• Triangle of the elementwise product of binomial coefficients with q-binomial coefficients [n,k] for q = 4.at n=23A157641
• Triangle of the elementwise product of binomial coefficients with q-binomial coefficients [n,k] for q = 4.at n=25A157641
• a(n) is the least integer that can be expressed as the difference of two hexagonal numbers in exactly n ways.at n=22A334035
• a(n) is the smallest number that has exactly n binary palindrome divisors (A006995).at n=35A355716
• T(n,m) is the number of m-dimensional isotropic subspaces of a 2n-dimensional symplectic space over Z/2, n >= 0 and 0 <= m <= n.at n=23A368493
• Denominators of the partial alternating sums of the reciprocals of the unitary totient function (A047994).at n=38A379520