41099

Appears in sequences

• Numerator of Sum_{k=0..n} 1/k!!.at n=8A143382
• G.f. A(x) satisfies: A(x) = 1/(1-x)^2 + x^2*A'(x).at n=8A143918
• Numbers k such that 8^k - 3 is prime.at n=18A217353
• Number of event structures with n labeled elements.at n=4A284276
• a(n) = 2*a(n-1) - a(n-3) + a(ceiling(n/2)), where a(0) = 1, a(1) = 2, a(2) = 3.at n=17A298405
• Number of compositions (ordered partitions) of n into octagonal numbers (A000567).at n=54A322800