121425

Appears in sequences

• a(n) = F(n+1) + c(n) where F(k) is k-th Fibonacci number and c(n) is n-th non-Fibonacci number.at n=24A022799
• n-th non-Lucas number plus Fibonacci(n + 1).at n=24A023490
• Numbers n such that sigma(n+1)-sigma(n) = -sigma(n)/d(n), where d(n) denotes the number of divisors of n.at n=16A066177