Number of fixed points in range [A014137(n-1)..A014138(n-1)] of permutations A127377/A127378 and A127387.
A127389
Number of fixed points in range [A014137(n-1)..A014138(n-1)] of permutations A127377/A127378 and A127387.
Terms
- a(0) =1a(1) =1a(2) =0a(3) =1a(4) =2a(5) =4a(6) =10a(7) =23a(8) =56a(9) =138a(10) =344a(11) =870a(12) =2220a(13) =5716a(14) =14828a(15) =38717a(16) =101682a(17) =268416a(18) =711810a(19) =1895432a(20) =5066030a(21) =13586082a(22) =36547534a(23) =98593064a(24) =266661162a(25) =722953814a(26) =1964358938a(27) =5348367006a(28) =14589803090a(29) =39870312218
External references
- oeis: A127389