Number of 2Xn 0..1 arrays with exactly floor(2Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order.
A222510
Number of 2Xn 0..1 arrays with exactly 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) =0a(1) =0a(2) =4a(3) =3a(4) =10a(5) =32a(6) =44a(7) =176a(8) =326a(9) =888a(10) =2076a(11) =5275a(12) =12306a(13) =32324a(14) =74284a(15) =195959a(16) =460498a(17) =1189652a(18) =2861016a(19) =7307596a(20) =17774488a(21) =45231012a(22) =110756056a(23) =281073368a(24) =692630902a(25) =1752734824a(26) =4342317676a(27) =10967047059a(28) =27278066490a(29) =68820679380
External references
- oeis: A222510