77197

Appears in sequences

• Centered icosahedral (or cuboctahedral) numbers, also crystal ball sequence for f.c.c. lattice.at n=28A005902
• a(0)=a(1)=1, a(2)=2; thereafter a(n) = 3*a(n-1) + 3*2^(n-3) - 2.at n=11A169651