A153469 1/6 of the number of 6-colorings of a planar n X n X n triangular grid.

1, 20, 1280, 262400, 172336640, 362631649280, 2444725581455360, 52804515715254149120, 3654168284344820145766400, 810181920328696211112009728000, 575510260400583306243122436913233920, 1309785302964658121693057449772004123607040

Offset

1,2

Links

Table of n, a(n) for n=1..12.

Crossrefs

6th row of A182797/6.

Sequence in context: A001451 A093598 A174581 * A160253 A338961 A274645

Adjacent sequences: A153466 A153467 A153468 * A153470 A153471 A153472

Keyword

nonn,more

Author

R. H. Hardin, Dec 27 2008

Extensions

a(10)-a(11) from Alois P. Heinz, Dec 03 2010

a(12) from Martin Fuller, Feb 20 2026

Status

approved