A103472 Number of polyominoes consisting of 6 regular unit n-gons.

12, 35, 118, 82, 118, 269, 585, 985, 1750, 1438, 1765, 2718, 4336, 6040, 8814, 7678, 8839, 11876, 16410, 20970, 27720, 24998, 27787, 34763, 44687, 54133, 67601, 62252, 67777, 81066, 99420, 116465, 140075, 130711, 140434, 163027, 193587, 221521

Offset: 3

Author

Sascha Kurz, Feb 07 2005

Keywords

• nonn

Examples

			a(3)=12 because there are 12 polyiamonds consisting of 6 triangles and a(4)=35 because there are 35 polyominoes consisting of 6 squares.
		

Links

• S. Kurz, k-polyominoes.

Crossrefs

Cf. A103469, A103470, A103471, A103473.