Number of (n+1)X(4+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.
A253694
Number of (n+1)X(4+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) =264a(1) =282a(2) =356a(3) =700a(4) =1120a(5) =1638a(6) =3136a(7) =4782a(8) =7926a(9) =14462a(10) =22656a(11) =39334a(12) =68068a(13) =110254a(14) =193022a(15) =326064a(16) =542916a(17) =941302a(18) =1578364a(19) =2668696a(20) =4579938a(21) =7691528a(22) =13087264a(23) =22287082a(24) =37577096a(25) =64014484a(26) =108601422a(27) =183741636a(28) =312684956a(29) =529783652
External references
- oeis: A253694