28394

Appears in sequences

• a(0) = 1, a(n) = 42*n^2 + 2 for n>0.at n=26A010023
• Numbers k such that the continued fraction for sqrt(k) has period 79.at n=20A020418
• Pseudo-random numbers: a (very weak) pseudo-random number generator from the second edition of the C book.at n=32A061364
• n + sigma(n) + phi(n) is a cube.at n=11A116008
• Counts compositions as described by table A047969; however, only those ending with an odd part are considered.at n=58A123685
• a(n) = 2*a(n-1)+3*a(n-2)-6*a(n-3) starting a(0)=a(1)=0, a(2)=1.at n=15A167762
• a(n) = 2^n - (1 - (-1)^n)*3^((n-1)/2).at n=15A167784
• Numbers that are the product of two distinct primes and they are partial sum of products of two distinct primes.at n=35A168476
• Bisection of A006950 (the even part).at n=26A233758
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 33", based on the 5-celled von Neumann neighborhood.at n=35A269812
• Nonnegative numbers k such that 3*k + 2 is a cube.at n=14A287335
• Number of subsets of {1..n} containing two distinct elements summing to n.at n=15A365544
• Number of subsets of {1..n} with two elements (possibly the same) summing to n.at n=15A366131