A275953 First differences of A265906; second differences of A265905.
6, 30, 204, 1446, 11550, 108204, 1091526, 11998830, 146864484, 1920044166, 26872081230, 407766664284, 6548790510726, 111305007240510, 2018907373622004, 38462931870864486, 769155464685741870, 16240360254478668204, 358012008058965575046, 8233510983226617823230, 198405453050668260272364, 4967948949777295176374646, 129158062469199137001844830
Offset: 1