91530451

Properties

Appears in sequences

• a(n) = 2*a(n-1) + 2*a(n-2) - a(n-3) with a(-1) = 1, a(0) = 1, a(1) = 1.at n=21A061646
• a(n) = a(n-1) + a(n-3) + a(n-4), where a(0) = 1, a(1) = 2, a(2) = 3, a(3) = 4.at n=38A293411
• Number of partitions of the vertices of the n-ladder graph into total dominating sets.at n=20A392415
• Prime numbersat n=5300627