90216

Appears in sequences

• G.f.: (1 + 5*x + 5*x^2 + x^3)/Product_{i=1..10} (1 - x^i).at n=36A256977
• Number of positive solutions to (x_1)^2 + (x_2)^2 + ... + (x_5)^2 <= n^2.at n=12A341424
• a(n) is the smallest integer k such that k is the sum of exactly n distinct permutations of k, all having the same number of digits as k.at n=7A384708