Number of nX3 0..3 arrays with no element equal to zero 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.
A240291
Number of nX3 0..3 arrays with no element equal to zero 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) =26a(2) =206a(3) =974a(4) =8064a(5) =38252a(6) =316962a(7) =1502948a(8) =12468758a(9) =59122266a(10) =490548594a(11) =2326075252a(12) =19300603720a(13) =91520046552a(14) =759392572070
External references
- oeis: A240291