A153470 1/7 of the number of 7-colorings of a planar n X n X n triangular grid.

1, 30, 3750, 1953750, 4242798750, 38404604583750, 1448977637979903750, 227870224522898915943750, 149369176223578379939728893750, 408114381491174443782294469248048750, 4647830909678374872940213803359098309308750

Offset: 1

Author

R. H. Hardin, Dec 27 2008

Keywords

• nonn

Crossrefs

7th row of A182797/7.

Extensions

a(8)-a(11) from Alois P. Heinz, Dec 03 2010