20039

Appears in sequences

• Convolution of A023532 and Fibonacci numbers.at n=20A023596
• Sign twisted convoluted convolved Fibonacci numbers H_j^(10).at n=8A089106
• Let f(k) = exp(Pi*sqrt(k)); sequence gives numbers k such that ceiling(f(k)) - f(k) < 1/10^3.at n=32A127022
• Numbers k such that 2^k modulo Fibonacci(k) is prime, i.e., A057862(k) is prime.at n=20A128161
• Sum of the smallest parts of the partitions of 4n into 4 parts with smallest part greater than 1.at n=19A238706
• Numbers k such that 2^k + 33 is prime.at n=31A247953
• Least multiple of n that contains only the distinct digits of n and n+1, with each of those digits appearing at least once.at n=28A328326
• a(n) is the number of 4 element sets of integer sided trapezoids with distinct areas and base angles that are 60 degrees, which fill an equilateral triangular grid of side n units.at n=46A389518