Number of n X 3 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.
A278671
Number of n X 3 0..1 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly one mistake.
Terms
- a(0) =4a(1) =33a(2) =158a(3) =579a(4) =1801a(5) =4999a(6) =12727a(7) =30218a(8) =67651a(9) =143936a(10) =292799a(11) =572247a(12) =1078870a(13) =1968906a(14) =3488570a(15) =6016844a(16) =10124758a(17) =16656179a(18) =26836284a(19) =42415243a(20) =65856199a(21) =100578425a(22) =151268585a(23) =224275350a(24) =328105245a(25) =474040554a(26) =676903413a(27) =955993903
External references
- oeis: A278671