20779

Appears in sequences

• First occurrence of n in A084511.at n=10A084517
• Fifth diagonal (m=4) of triangle A084938; a(n) = A084938(n+4,n) = (n^4 + 18*n^3 + 131*n^2 + 426*n)/24.at n=22A090386
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of A203955.at n=31A203956
• Number of integers less than 10^n which are not divisible by any of the first n primes.at n=4A215671
• a(n) = 2*3^n + 4^n + 3*n.at n=7A290720
• Consecutive states of the linear congruential pseudo-random number generator 259*s mod 2^15 when started at s=1.at n=31A384194