Number of preference profiles with 4 alternatives and n agents (IANC model).

Terms

a(0) =1a(1) =1a(2) =17a(3) =111a(4) =762a(5) =4095a(6) =19941a(7) =84825a(8) =329214a(9) =1168740a(10) =3858348a(11) =11920740a(12) =34773590a(13) =96282900a(14) =254473884a(15) =644637204a(16) =1571330916a(17) =3697182450a(18) =8421423582a(19) =18615637950a(20) =40023753924a(21) =83859017814a(22) =171530071362a(23) =343059613650a(24) =671825586021