3145705domain: NAppears in sequencesSum of products of parts increased by 1 in hook partitions of n, where hook partitions are of the form h*1^(n-h).at n=20A077802a(n+3) = 3*a(n+2) - 2*a(n+1) + 1 with a(0)=0, a(1)=2.at n=20A095151