0,2

This is the hexagonal P lattice (the classical holotype) of dimension 3.

John Cannon, Table of n, a(n) for n = 0..10000

G. Nebe and N. J. A. Sloane, Home page for this lattice

1 + 2*q + 6*q^2 + 12*q^3 + 2*q^4 + 18*q^6 + 12*q^7 + 6*q^8 + 14*q^9 + 12*q^10 + ...

Sequence in context: A293589 A293117 A293122 * A188894 A054579 A277962

Adjacent sequences: A014449 A014450 A014451 * A014453 A014454 A014455

nonn

N. J. A. Sloane.

approved