Sequence gives the Poincaré series [or Poincare series] of an ordinal Hodge algebra, or algebra with straightening law, for a ring that the braid group on four strands acts on. It is Cohen-Macaulay.
A156231
Sequence gives the Poincaré series [or Poincare series] of an ordinal Hodge algebra, or algebra with straightening law, for a ring that the braid group on four strands acts on. It is Cohen-Macaulay.
Terms
- a(0) =1a(1) =0a(2) =6a(3) =8a(4) =24a(5) =48a(6) =106a(7) =192a(8) =369a(9) =624a(10) =1080a(11) =1728a(12) =2787a(13) =4248a(14) =6498a(15) =9528a(16) =13962a(17) =19824a(18) =28066a(19) =38760a(20) =53334a(21) =71936a(22) =96618a(23) =127680a(24) =167983a(25) =218040a(26) =281784a(27) =360024a(28) =458037a(29) =577080
External references
- oeis: A156231