99666

Appears in sequences

• 6-almost primes with semiprime digits (digits 4, 6, 9 only).at n=26A111730
• Numbers k such that k and k^2 use only the digits 1, 3, 5, 6 and 9.at n=28A137035
• Number of tiles in distance d from a given heptagon in the truncated order-3 tiling of the heptagonal plane (a.k.a. the "hyperbolic soccerball").at n=18A290398
• Expansion of 1/((1-x)*(1-2*x^2)*(1-3*x^3)*(1-4*x^4)).at n=22A291987
• Primitive terms of A108569.at n=38A346277