Number of 132 and 213-avoiding derangements of {1,2,...,n}.

Terms

a(0) =1a(1) =0a(2) =1a(3) =2a(4) =6a(5) =10a(6) =26a(7) =42a(8) =106a(9) =170a(10) =426a(11) =682a(12) =1706a(13) =2730a(14) =6826a(15) =10922a(16) =27306a(17) =43690a(18) =109226a(19) =174762a(20) =436906a(21) =699050a(22) =1747626a(23) =2796202a(24) =6990506a(25) =11184810a(26) =27962026a(27) =44739242a(28) =111848106a(29) =178956970