Number of Catalan objects fixed by six-fold application of the Catalan bijections A057511/A057512 (Deep rotation of general parenthesizations/plane trees).

A079227

Number of Catalan objects fixed by six-fold application of the Catalan bijections A057511/A057512 (Deep rotation of general parenthesizations/plane trees).

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =14a(5) =38a(6) =111a(7) =332a(8) =1029a(9) =3232a(10) =10374a(11) =33679a(12) =110722a(13) =367252a(14) =1228558a(15) =4138120a(16) =14025473a(17) =47792389a(18) =163643066a(19) =562722427a(20) =1942548520a(21) =6729230281a(22) =23385132060a(23) =81503084084a(24) =284815902739a(25) =997741303308

External references