Number of n X 2 0..3 arrays with no element equal to two plus the sum of elements to its left or two plus the sum of the sum of elements above it, modulo 4.
A238991
Number of n X 2 0..3 arrays with no element equal to two plus the sum of elements to its left or two plus the sum of the sum of elements above it, modulo 4.
Terms
- a(0) =7a(1) =41a(2) =203a(3) =955a(4) =4393a(5) =20015a(6) =90841a(7) =411621a(8) =1863915a(9) =8437893a(10) =38193735a(11) =172873711a(12) =782450381a(13) =3541446587a(14) =16028869589a(15) =72547812889a(16) =328356354383
External references
- oeis: A238991