Number of character table entries of the symmetric group S_n which are > 0.

Terms

a(0) =1a(1) =3a(2) =6a(3) =14a(4) =26a(5) =58a(6) =98a(7) =194a(8) =344a(9) =652a(10) =1165a(11) =2020a(12) =3552a(13) =6077a(14) =10362a(15) =17080a(16) =28570a(17) =46836a(18) =77045a(19) =122013a(20) =198461a(21) =310602a(22) =494008a(23) =767237a(24) =1205391a(25) =1828252a(26) =2846995a(27) =4277605a(28) =6520106a(29) =9795470