150756

Appears in sequences

• a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = -2, a(1) = 0, a(2) = 0, a(3) = 1.at n=23A295858
• Number of set partitions of [n] with distinct block sizes and one of the block sizes is 1.at n=12A327876