Number of non-unimodal, non-co-unimodal sequences of length n covering an initial interval of positive integers.
A332873
Number of non-unimodal, non-co-unimodal sequences of length n covering an initial interval of positive integers.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =22a(5) =340a(6) =3954a(7) =44716a(8) =536858a(9) =7056252a(10) =102140970a(11) =1622267196a(12) =28090317226a(13) =526854073564
External references
- oeis: A332873