323401

Appears in sequences

• Number of distributive lattices; also number of paths with n turns when light is reflected from 12 glass plates.at n=6A030116
• a(n) = (n+1)*(n+2)*(61*n^4 + 366*n^3 + 845*n^2 + 888*n + 360)/720.at n=11A108675
• Row 4 of A328464: a(n) = A276156(16n - 8) / 30.at n=18A328467