22493

Appears in sequences

• Convolution of Lucas numbers and A001950.at n=14A023622
• (1/8)*number of lattice points with odd indices in a cubic lattice inside a sphere around the origin with radius 2*n.at n=34A120884
• Number of integer partitions of n having more than one permutation with all equal run-lengths.at n=39A383090
• a(n) = A276086(n)*A276086(sigma(n)-n) - A276086(sigma(n)), where A276086 is the primorial base exp-function, and sigma is the sum of divisors function.at n=28A388281