275275

Appears in sequences

• Triangle of numbers arising from analysis of Levine's sequence A011784.at n=45A014621
• a(n) = binomial(n+2,n)*binomial(n+6,n).at n=9A105249
• Numbers k such that k and k^2 use only the digits 2, 3, 5, 6 and 7.at n=38A137080
• Triangle read by rows: T(n,k) = number of partitions of [1..k] into n nonempty clumps of sizes 1, 2, 3 or 4 (n >= 0, 0 <= k <= 4n).at n=40A144643
• Number of achiral colorings of the 8 cubic facets of a tesseract or of the 8 vertices of a hyperoctahedron.at n=9A337958
• a(n) is the number of regions into which three-dimensional Euclidean space is divided by n-1 planes parallel to each face of a regular tetrahedron with edge length n, dividing the edges into unit segments.at n=41A364401