6241124352

Appears in sequences

• Expansion of (1 - 2x + 2x^2 - x^3)/(1 - 2x)^2.at n=29A084860
• a(1)= 2. For n > 1, a(n) is the least number k such that k, k - a(n-1) and k + a(n-1) all have n prime divisors counted by multiplicity.at n=27A365852