Maximum number of copies of a 1234 permutation pattern in an alternating (or zig-zag) permutation of length n + 5.

A338429

Maximum number of copies of a 1234 permutation pattern in an alternating (or zig-zag) permutation of length n + 5.

Terms

    a(0) =4a(1) =8a(2) =28a(3) =48a(4) =104a(5) =160a(6) =280a(7) =400a(8) =620a(9) =840a(10) =1204a(11) =1568a(12) =2128a(13) =2688a(14) =3504a(15) =4320a(16) =5460a(17) =6600a(18) =8140a(19) =9680a(20) =11704a(21) =13728a(22) =16328a(23) =18928a(24) =22204a(25) =25480a(26) =29540a(27) =33600a(28) =38560a(29) =43520

External references