Number of n X 2 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,0) and new values introduced in order 0..2.
A275222
Number of n X 2 0..2 arrays with no element equal to any value at offset (-2,-1) (-2,1) or (-1,0) and new values introduced in order 0..2.
Terms
- a(0) =2a(1) =6a(2) =11a(3) =27a(4) =66a(5) =162a(6) =404a(7) =1007a(8) =2512a(9) =6271a(10) =15655a(11) =39084a(12) =97580a(13) =243626a(14) =608259a(15) =1518638a(16) =3791579a(17) =9466427a(18) =23634810a(19) =59008986a(20) =147327628a(21) =367832623a(22) =918367048a(23) =2292885359a(24) =5724642759a(25) =14292705300a(26) =35684571668a(27) =89093606034a(28) =222439846275
External references
- oeis: A275222