31839

Appears in sequences

• Numbers n such that 9*10^n-7 is prime.at n=25A103092
• Antidiagonal sums of the Wythoff array A035513.at n=16A160997
• Number of 0..n arrays of length 3 with each element differing from at least one neighbor by something other than 1.at n=31A221574
• 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=32A224303
• Odd numbers n for which the 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=13A224533
• Expansion of Product_{k>=1} 1/(1-x^k)^(k*(k+1)).at n=10A258347
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 363", based on the 5-celled von Neumann neighborhood.at n=36A268154