A240275 Number of 5Xn 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of the elements above it or one plus the sum of the elements diagonally to its northwest, modulo 4.
10, 72, 2000, 49921, 1363144, 40760821, 1277623744, 41700264862, 1401065174093, 47967535279669, 1662365159922179, 58055815885463615, 2037231165976598098, 71699030982374305133, 2527959942776102405087, 89229063928826842973827
Offset: 1
Keywords
Examples
Some solutions for n=4 ..3..2..0..2....3..2..2..0....3..0..0..0....2..0..3..3....3..2..0..3 ..3..2..0..0....3..1..2..0....2..3..2..2....2..0..3..3....3..1..2..3 ..2..3..0..2....2..3..2..0....3..2..2..2....3..0..2..2....2..1..2..2 ..3..2..2..0....3..0..2..2....3..1..2..0....2..3..2..2....3..0..2..0 ..2..1..2..2....2..1..0..0....3..2..2..0....3..1..2..0....2..3..2..2
Links
- R. H. Hardin, Table of n, a(n) for n = 1..210
Comments