Number of permutations of [n] with exactly four (possibly overlapping) occurrences of the generalized pattern 23-1.

A264463

Number of permutations of [n] with exactly four (possibly overlapping) occurrences of the generalized pattern 23-1.

Terms

    a(0) =3a(1) =62a(2) =624a(3) =5513a(4) =46880a(5) =396545a(6) =3388893a(7) =29497132a(8) =262619041a(9) =2397130075a(10) =22458202716a(11) =216063700398

External references