Coefficients of a polynomial used in calculation of A055914.

Terms

a(0) =1a(1) =7a(2) =27a(3) =105a(4) =310a(5) =806a(6) =1970a(7) =4234a(8) =8755a(9) =16652a(10) =30224a(11) =52466a(12) =85594a(13) =137723a(14) =206033a(15) =309999a(16) =430890a(17) =610219a(18) =795737a(19) =1066153a(20) =1311798a(21) =1671253a(22) =1946718a(23) =2369655a(24) =2615436a(25) =3057147a(26) =3194751a(27) =3603847a(28) =3556844a(29) =3892590