664302

Appears in sequences

• a(n) = 2*a(n-1) + 3*a(n-2), with a(0) = 2 and a(1) = 3.at n=12A135522
• a(n+1) = 9*a(n) - 6, a(0) = 2.at n=6A137483
• Expansion of e.g.f. exp(x)^( cos(x) + sin(x) ).at n=11A354545