Possible hands in the card game Skat (abbreviated version).

Terms

a(0) =18a(1) =20a(2) =2a(3) =3a(4) =4a(5) =7a(6) =30a(7) =33a(8) =35a(9) =36a(10) =40a(11) =44a(12) =45a(13) =46a(14) =48a(15) =50a(16) =54a(17) =55a(18) =56a(19) =60a(20) =63a(21) =66a(22) =70a(23) =72a(24) =77a(25) =80a(26) =84a(27) =100a(28) =120a(29) =140