121419

Appears in sequences

• a(n) = Fibonacci(n) + n.at n=26A002062
• Number of n X 3 arrays of the minimum value of corresponding elements and their horizontal, diagonal or antidiagonal neighbors in a random, but sorted with lexicographically nondecreasing rows and columns, 0..1 n X 3 array.at n=40A219514
• Numbers k such that 1 + Sum_{i=1..k} floor(k/i)*(2^i) is a prime number.at n=26A344783