19411

Appears in sequences

• Numbers k such that 10^999 + k is a (titanic) prime.at n=12A074282
• Expansion of eta(q^2)eta(q^10)^3/(eta(q^5)eta(q)^3) in powers of q.at n=15A095846
• Structured hexagonal anti-prism numbers.at n=20A100183
• a(n) = A030068(4n+1).at n=48A169739
• Numbers n such that 3n appears earlier than 2n in A280864.at n=43A280755
• Relative of Hofstadter Q-sequence: a(n) = max(0, n+19395) for n <= 0; a(n) = a(n-a(n-1)) + a(n-a(n-2)) + a(n-a(n-3)) for n > 0.at n=20A283886
• Numbers that are the sum of seven fourth powers in six or more ways.at n=17A345572
• Numbers that are the sum of seven fourth powers in exactly six ways.at n=14A345828