21459

Appears in sequences

• Triangle read by rows: T(n,k) is the number of ordered trees with n edges and having k branches of length 1 starting from the root (0<=k<=n).at n=67A127158
• Smallest number that is the sum of n successive primes and also the sum of n successive semiprimes, n > 1.at n=21A283873
• The smallest positive number of the form 3^n-2^a-2^b.at n=12A292425
• Numbers k such that 3^k + k + 1 is a prime.at n=11A301632
• Expansion of 1/((1 - x)*(1 - Sum_{k>=0} x^(2^k))).at n=17A303666
• Number of integer partitions of n whose omega-sequence does not cover an initial interval of positive integers.at n=37A325262
• Consecutive states of the linear congruential pseudo-random number generator 254*s mod (2^16+1) when started at s=1.at n=9A384934