344065

Appears in sequences

• a(n) = 3*n*2^(n-1) + 1.at n=14A048474
• 1 + (n+6)*2^(n-1).at n=15A115618
• Expansion of Sum_{k>0} (x * (1 + (2 * x)^k))^k.at n=20A360752