Number of discordant permutations.

Terms

a(0) =6a(1) =44a(2) =145a(3) =336a(4) =644a(5) =1096a(6) =1719a(7) =2540a(8) =3586a(9) =4884a(10) =6461a(11) =8344a(12) =10560a(13) =13136a(14) =16099a(15) =19476a(16) =23294a(17) =27580a(18) =32361a(19) =37664a(20) =43516a(21) =49944a(22) =56975a(23) =64636a(24) =72954a(25) =81956a(26) =91669a(27) =102120a(28) =113336a(29) =125344