Number of 2Xn 0..1 arrays with no more than floor(2Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order.
A222542
Number of 2Xn 0..1 arrays with no more than floor(2Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order.
Terms
- a(0) =2a(1) =1a(2) =5a(3) =8a(4) =19a(5) =54a(6) =104a(7) =294a(8) =665a(9) =1653a(10) =3999a(11) =9931a(12) =23922a(13) =60440a(14) =145456a(15) =367778a(16) =895971a(17) =2252812a(18) =5539668a(19) =13906403a(20) =34364667a(21) =86296674a(22) =214005020a(23) =537481517a(24) =1337290024a(25) =3358607279a(26) =8379217095a(27) =21048882131a(28) =52624535726a(29) =132246784124
External references
- oeis: A222542