Number of 3Xn 0..3 arrays with no more than floor(3Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222681
Number of 3Xn 0..3 arrays with no more than floor(3Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =5a(1) =5a(2) =11a(3) =58a(4) =142a(5) =2398a(6) =6463a(7) =146947a(8) =401552a(9) =9871237a(10) =27759999a(11) =675112590a(12) =1962193874a(13) =46428879519a(14) =139050595341
External references
- oeis: A222681