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

1,2

Links

Table of n, a(n) for n=1..11.

Crossrefs

7th row of A182797/7.

Sequence in context: A115465 A152131 A159993 * A289247 A275049 A127849

Adjacent sequences: A153467 A153468 A153469 * A153471 A153472 A153473

Keyword

nonn

Author

R. H. Hardin, Dec 27 2008

Extensions

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

Status

approved