Number of n X 2 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.
A240359
Number of n X 2 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) =4a(1) =15a(2) =43a(3) =111a(4) =261a(5) =571a(6) =1171a(7) =2278a(8) =4235a(9) =7570a(10) =13076a(11) =21918a(12) =35774a(13) =57018a(14) =88954a(15) =136111a(16) =204610a(17) =302615a(18) =440881a(19) =633413a(20) =898251a(21) =1258397a(22) =1742901a(23) =2388124a(24) =3239197a(25) =4351696a(26) =5793554a(27) =7647232a(28) =10012172a(29) =13007556
External references
- oeis: A240359