Number of compositions of n into exactly three different parts with distinct multiplicities.

Terms

a(0) =60a(1) =285a(2) =498a(3) =1438a(4) =2816a(5) =5208a(6) =11195a(7) =24094a(8) =38523a(9) =85182a(10) =148051a(11) =255922a(12) =512428a(13) =991423a(14) =1573152a(15) =3318750a(16) =5820718a(17) =9712145a(18) =19523028a(19) =36637218a(20) =58805129a(21) =121712569a(22) =216006156a(23) =360123456a(24) =720094287a(25) =1340734558a(26) =2184432420a(27) =4453145090a(28) =7987036106a(29) =13417450294