17949

Appears in sequences

• a(n) = 12*n^2 - 8*n + 9.at n=38A167585
• Expansion of (1 + x)/(1 - x^2 - 2*x^5).at n=35A237714
• Integers n such that 2n^2+1, 2n^3+1 and 2n^4+1 are prime.at n=21A239920
• Products of three distinct tribonacci numbers > 1.at n=37A274434
• a(n) = Sum_{k=1..n} (k * floor(n/k))^3.at n=12A356249