124562

Appears in sequences

• a(n) = ((2+sqrt(5))*(4+sqrt(5))^n + (2-sqrt(5))*(4-sqrt(5))^n)/2.at n=6A162772
• Number of compositions of n whose negation is unimodal.at n=30A332578
• Number of integer compositions of n whose leaders of anti-runs are strictly decreasing.at n=21A374680