A103659 (1/6) * most frequently occurring volume assumed by triangular pyramids with their 4 vertices chosen from distinct points of an (n+1)X(n+1)X(n+1) lattice cube.

1, 2, 2, 4, 4, 12, 12, 12, 12, 12, 24, 24, 24, 24

Offset

1,2

Links

Table of n, a(n) for n=1..14.

Example

a(1)=1 because 2*A103660(1)=56 of the 2*A103656(1)=58 triangular pyramids that can be formed from the vertices of a cube have volume=1/6. The other two pyramids have volume=1/3.

Crossrefs

Cf. A103660 = number of occurrences of the most frequent volume. For more cross-references see A103657.

Sequence in context: A243331 A300218 A138317 * A069947 A051547 A330719

Adjacent sequences: A103656 A103657 A103658 * A103660 A103661 A103662

Keyword

more,nonn

Author

Hugo Pfoertner, Feb 19 2005

Status

approved