Number of partitions of n into parts of exactly four sorts which are introduced in ascending order such that sorts of adjacent parts are different.

A320546

Number of partitions of n into parts of exactly four sorts which are introduced in ascending order such that sorts of adjacent parts are different.

Terms

    a(0) =1a(1) =7a(2) =33a(3) =130a(4) =464a(5) =1558a(6) =5039a(7) =15886a(8) =49282a(9) =151165a(10) =460352a(11) =1394863a(12) =4212752a(13) =12694566a(14) =38197710a(15) =114820403a(16) =344919283a(17) =1035670246a(18) =3108844526a(19) =9330186438a(20) =27997888759a(21) =84008273161a(22) =252054096569a(23) =756220672185

External references