Number of n X 2 0..1 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.
A278357
Number of n X 2 0..1 arrays with rows and columns in lexicographic nondecreasing order but with exactly one mistake.
Terms
- a(0) =1a(1) =6a(2) =27a(3) =96a(4) =281a(5) =708a(6) =1590a(7) =3264a(8) =6237a(9) =11242a(10) =19305a(11) =31824a(12) =50661a(13) =78248a(14) =117708a(15) =172992a(16) =249033a(17) =351918a(18) =489079a(19) =669504a(20) =903969a(21) =1205292a(22) =1588610a(23) =2071680a(24) =2675205a(25) =3423186a(26) =4343301a(27) =5467312a(28) =6831501a(29) =8477136
External references
- oeis: A278357