Number of nX5 0..1 arrays with every element equal to 0, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.

A301903

Number of nX5 0..1 arrays with every element equal to 0, 2 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =3a(2) =2a(3) =8a(4) =12a(5) =64a(6) =196a(7) =864a(8) =3236a(9) =13280a(10) =52260a(11) =210400a(12) =838180a(13) =3358176a(14) =13419044a(15) =53698016a(16) =214737444a(17) =859037152a(18) =3435930148a(19) =13744070112a(20) =54975406628a(21) =219903024608a(22) =879608603172

External references