Number of nX3 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-2) or (-2,0) and new values introduced in order 0..2.
A275032
Number of nX3 0..2 arrays with no element equal to any value at offset (0,-1) (-1,-2) or (-2,0) and new values introduced in order 0..2.
Terms
- a(0) =2a(1) =16a(2) =46a(3) =146a(4) =450a(5) =1428a(6) =4463a(7) =14086a(8) =44195a(9) =139130a(10) =437175a(11) =1375142a(12) =4323125a(13) =13594852a(14) =42745150a(15) =134409630a(16) =422629291a(17) =1328908089a(18) =4178573479a(19) =13138981872a(20) =41313830121a(21) =129905918777a(22) =408472374963
External references
- oeis: A275032