Number of nX3 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4.
A240360
Number of nX3 0..3 arrays with no element equal to one plus the sum of elements to its left or two plus the sum of elements above it or two plus the sum of the elements diagonally to its northwest, modulo 4.
Terms
- a(0) =8a(1) =51a(2) =257a(3) =1181a(4) =4825a(5) =18307a(6) =64013a(7) =209366a(8) =645067a(9) =1889163a(10) =5290881a(11) =14255341a(12) =37123088a(13) =93794323a(14) =230612423a(15) =553103591a(16) =1296531617a(17) =2974976604a(18) =6690386564a(19) =14761551146a(20) =31981485566a(21) =68087935696a(22) =142536873665a(23) =293578073240
External references
- oeis: A240360