Fixed points of permutations A252022 and A252023.

Terms

a(0) =1a(1) =2a(2) =3a(3) =4a(4) =5a(5) =36a(6) =72a(7) =125a(8) =136a(9) =900a(10) =4454a(11) =8021a(12) =27223a(13) =33905a(14) =73222a(15) =127536a(16) =146353a(17) =180177a(18) =234668a(19) =273241a(20) =528702