94644

Appears in sequences

• a(n) = A027113(n, 2n).at n=13A027118
• Row sums of A075652.at n=35A075650
• 6-almost primes with semiprime digits (digits 4, 6, 9 only).at n=22A111730
• Triangle T(n,m,p,q) = (p^(n-k)*q^k + p^k*q^(n-k))*(StirlingS2(n, k) + StirlingS2(n, n-k)) with p=2 and q=1, read by rows.at n=47A154915
• Triangle T(n,m,p,q) = (p^(n-k)*q^k + p^k*q^(n-k))*(StirlingS2(n, k) + StirlingS2(n, n-k)) with p=2 and q=1, read by rows.at n=52A154915
• a(1)=4, a(2)=6; for n > 2, a(n) = 2*a(n-1) + a(n-2) - 4*((n-1) mod 2).at n=12A162485