Number of nX2 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 one plus the sum of the elements diagonally to its northwest, modulo 4.
A239995
Number of nX2 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 one plus the sum of the elements diagonally to its northwest, modulo 4.
Terms
- a(0) =3a(1) =13a(2) =61a(3) =256a(4) =1117a(5) =5012a(6) =22592a(7) =102336a(8) =465662a(9) =2123857a(10) =9698188a(11) =44317651a(12) =202610817a(13) =926532786a(14) =4237612923a(15) =19382872561a(16) =88661747469a(17) =405570672096
External references
- oeis: A239995