123742080

Appears in sequences

• E.g.f. 1/(1-x-2*x^2).at n=9A052585
• A Jacobsthal number related number triangle.at n=45A110321
• a(n) = n! + (n+1)! + 3*(n+2)!.at n=9A225658
• Numbers k such that A380845(k) > 4*k.at n=17A380931
• Numbers k such that A380845(k)/k > A380845(m)/m for all m < k.at n=34A381070