19882

Appears in sequences

• Red rooted red-black trees with n internal nodes.at n=18A001138
• Pseudo-random numbers: a (very weak) pseudo-random number generator from the second edition of the C book.at n=28A061364
• a(n) is the number of divisors of n-th even perfect number.at n=21A061645
• Smallest squarefree integer k such that Q(sqrt(k)) has class number n.at n=33A081363
• Numbers m such that (1+i)^m - i is a Gaussian prime.at n=26A103329
• a(n) = n^3 + 73*n^2 + n + 67.at n=15A163303
• Numbers k such that there are 14 primes between 100*k and 100*k + 99.at n=37A186406
• Number of 3 X n 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and rows and columns lexicographically nondecreasing.at n=38A229446
• a(n) = 9*n^2 + 1.at n=47A247792
• Values of n such that A080221(n)=6; i.e., values of n such that n is divisible by the sum of digits of n when expressed in exactly 6 of the bases b=1...n.at n=23A271311
• Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 118", based on the 5-celled von Neumann neighborhood.at n=28A285908