Number of n X 1 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it, modulo 4.

A239040

Number of n X 1 0..3 arrays with no element equal to one plus the sum of elements to its left or one plus the sum of elements above it, modulo 4.

Terms

    a(0) =3a(1) =7a(2) =16a(3) =38a(4) =90a(5) =212a(6) =500a(7) =1180a(8) =2784a(9) =6568a(10) =15496a(11) =36560a(12) =86256a(13) =203504a(14) =480128a(15) =1132768a(16) =2672544a(17) =6305344a(18) =14876224a(19) =35097536a(20) =82805760a(21) =195363968a(22) =460923008a(23) =1087457536a(24) =2565643008a(25) =6053132032a(26) =14281179136a(27) =33693644288a(28) =79493552640a(29) =187549463552

External references