Number of partitions of n into an even number of parts, the greatest being 5; also, a(n+9) = number of partitions of n+4 into an odd number of parts, each <=5.

A026929

Number of partitions of n into an even number of parts, the greatest being 5; also, a(n+9) = number of partitions of n+4 into an odd number of parts, each <=5.