39344

Appears in sequences

• Half the number of 0..n arrays of length 4 with second differences nonzero.at n=15A212783
• Numbers n for which number of iterations to reach the largest equals number of iterations to reach 1 from the largest in Collatz (3x+1) trajectory of n.at n=40A224303
• p-INVERT of (1,0,0,0,1,0,0,0,0,0,...), where p(S) = (1 - S)^2.at n=29A292325
• O.g.f. A(x) satisfies: 0 = [x^n] exp( n*(n-1) * x * A(x) ) / A(x), for n > 0, with A'(0) = 0.at n=5A305596
• Numbers k such that 445*2^k+1 is prime.at n=32A323151
• a(n) is the smallest number that starts a run of exactly n consecutive integers that are neither primes nor semiprimes.at n=14A343729
• Number of partitions of n with at most five part sizes.at n=42A364809
• Difference between the primorial base exp-function and the arithmetic derivative.at n=58A373849