173433

Appears in sequences

• Hexagonal prism numbers: a(n) = (n + 1)*(3*n^2 + 3*n + 1).at n=38A005915
• Number of nX3 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X4 binary array having an odd sum, with rows and columns of the latter in lexicographically nondecreasing order.at n=7A227676
• T(n,k)=Number of nXk 0,1 arrays indicating 2X2 subblocks of some larger (n+1)X(k+1) binary array having an odd sum, with rows and columns of the latter in lexicographically nondecreasing order.at n=47A227679