68410

Appears in sequences

• Number of (1+1) X (n+1) arrays of permutations of 0..n*2+1 with each element having directed index change 0,1 0,-2 1,0 or -1,0.at n=17A264300
• a(n) = A347961(A276086(n)), where A347961 is Dirichlet convolution of A342001 with itself.at n=59A347962