Number of fixed points in all 132- and 213-avoiding permutations of {1,2,...,n} (these are permutations with runs consisting of consecutive integers).

A068018

Number of fixed points in all 132- and 213-avoiding permutations of {1,2,...,n} (these are permutations with runs consisting of consecutive integers).

Terms

    a(0) =0a(1) =1a(2) =2a(3) =4a(4) =6a(5) =12a(6) =18a(7) =40a(8) =62a(9) =148a(10) =234a(11) =576a(12) =918a(13) =2284a(14) =3650a(15) =9112a(16) =14574a(17) =36420a(18) =58266a(19) =145648a(20) =233030a(21) =582556a(22) =932082a(23) =2330184a(24) =3728286a(25) =9320692a(26) =14913098a(27) =37282720a(28) =59652342a(29) =149130828

External references