Coefficients of a polynomial used in calculation of A055915.

Terms

a(0) =1a(1) =8a(2) =36a(3) =156a(4) =524a(5) =1552a(6) =4259a(7) =10394a(8) =24183a(9) =51875a(10) =106494a(11) =206745a(12) =384905a(13) =687199a(14) =1183788a(15) =1963561a(16) =3173730a(17) =4927653a(18) =7548433a(19) =11034284a(20) =16135051a(21) =22312164a(22) =31309061a(23) =41115663a(24) =55583921a(25) =69539866a(26) =90846746a(27) =108550608a(28) =137370735