21974

Appears in sequences

• Convolution of odd numbers and A001950.at n=28A023659
• Number of partitions of n such that the multiplicity of the number of parts is a part.at n=51A240499
• Number of length n arrays of permutations of 0..n-1 with each element moved by -5 to 5 places and equal numbers of elements moved upwards and downwards.at n=8A263741
• Numbers n such that there are precisely 2 groups of order n and 3 of order n + 1.at n=21A296025
• a(n) = Sum_{k=0..n} binomial(n+4*k+4,n-k) * Catalan(k).at n=6A360057