180288

Appears in sequences

• Theta series of 8-d 6-modular lattice G_2 tensor F_4 (or A_2 tensor D_4) with det 1296 and minimal norm 4 in powers of q^2.at n=28A028977
• Number of non-sphere-homeomorphic crossing optimal 2-page book drawings of complete graph K_{2n+1}.at n=14A226917
• Number of length-n phone numbers that can be dialed by a chess knight on a 0-9 keypad that starts on any number and takes n-1 steps.at n=12A327692