Number of (n+1)X(5+1) 0..1 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically.
A253695
Number of (n+1)X(5+1) 0..1 arrays with every 2X2 subblock ne-sw antidiagonal difference unequal to its neighbors horizontally and nw+se diagonal sum unequal to its neighbors vertically.
Terms
- a(0) =680a(1) =540a(2) =618a(3) =992a(4) =1632a(5) =2386a(6) =4180a(7) =6552a(8) =10696a(9) =18236a(10) =28352a(11) =47594a(12) =80548a(13) =128248a(14) =216740a(15) =356714a(16) =584026a(17) =981652a(18) =1609356a(19) =2663806a(20) =4459244a(21) =7313942a(22) =12171062a(23) =20237510a(24) =33418882a(25) =55628622a(26) =92193244a(27) =152691570a(28) =254244632
External references
- oeis: A253695