Number of permutations of [n] with exactly four (possibly overlapping) occurrences of the generalized pattern 12-3.
A264453
Number of permutations of [n] with exactly four (possibly overlapping) occurrences of the generalized pattern 12-3.
Terms
- a(0) =2a(1) =41a(2) =492a(3) =4851a(4) =44291a(5) =394154a(6) =3502159a(7) =31450283a(8) =287335089a(9) =2680535274a(10) =25586566853a(11) =250169461829
External references
- oeis: A264453