47070

Appears in sequences

• a(n) = ceiling(Sum_{i=1..n-1} a(i)/4) for n >= 2 starting with a(1) = 1.at n=51A120160
• Ordered forests of k increasing plane unary-binary trees with n nodes.at n=29A185423
• a(n) is the number of fixed polyominoes with sprawl n.at n=27A338212
• Number of integer partitions of n with integer median of 0-appended first differences.at n=41A360688