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

A079226

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

Terms

    a(0) =1a(1) =1a(2) =2a(3) =3a(4) =5a(5) =6a(6) =15a(7) =36a(8) =108a(9) =301a(10) =814a(11) =2080a(12) =5223a(13) =12919a(14) =32557a(15) =83943a(16) =222591a(17) =600252a(18) =1632814a(19) =4440240a(20) =12043224a(21) =32572225a(22) =88081208a(23) =238722759a(24) =649725756a(25) =1776546687a(26) =4877740703a(27) =13432630929a(28) =37063472432a(29) =102389547753

External references