36002

Appears in sequences

• a(0) = 1, a(n) = 40*n^2 + 2 for n>0.at n=30A010022
• a(n) = (1/n!)*A001565(n).at n=32A094792
• Number of prefix normal palindromes of length n.at n=36A308465
• a(n) is the least positive even number k such that among the first k prime numbers there are exactly k/2 prime numbers where the n-th least significant bit is one, or a(n) = -1 if no such k exists.at n=8A308575
• a(n) is the largest integer k such that sigma(k)/(d(k)*sopf(k)) = n where d=A000005, sigma=A000203 and sopf=A008472.at n=15A328175