84640

Appears in sequences

• Numbers k such that 151*2^k+1 is prime.at n=13A032425
• Numbers k such that the decimal part of k^(1/9) starts with a 'nine digits' anagram.at n=28A034284
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 0, 1), (0, 0, 1), (0, 1, 1), (1, 1, -1)}.at n=9A150169
• Numbers that are values of the totient function (A002202) but not of the reduced totient function (A002174).at n=31A270265
• Number of subsets of {1..n} containing all of their integer quotients > 1.at n=21A326079