States of a dynamic storage system.

Terms

a(0) =1a(1) =2a(2) =4a(3) =7a(4) =14a(5) =26a(6) =59a(7) =122a(8) =284a(9) =647a(10) =1528a(11) =3602a(12) =8679a(13) =20882a(14) =50824a(15) =124055a(16) =304574a(17) =750122a(18) =1855099a(19) =4600202a(20) =11442086a(21) =28527447a(22) =71292604a(23) =178526882a(24) =447919419a(25) =1125750146a(26) =2833906684a(27) =7144450567a(28) =18036423974