126021

Appears in sequences

• a(n) = T(2n,n-1), T given by A026670. Also T(2n,n-1)=T(2n+1,n+2), T given by A026725; and T(2n,n-1), T given by A026736.at n=8A026672
• a(n) = greatest number in row n of array T given by A026736.at n=18A027214
• Numbers k that divide the (right) concatenation of all numbers <= k written in base 9 (most significant digit on left).at n=32A029454
• a(n) = 100*n^2 + 100*n + 21.at n=35A152161
• a(n) = 120*n^3 + 60*n^2 + 2*n + 1.at n=10A272126
• Dimension of space of equivariant linear maps from R^{n^3} to R^{n^3} under diagonal action of {-1, 1}^n.at n=21A370649