Number of n X 4 0..1 arrays with no element equal to more than two of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
A280600
Number of n X 4 0..1 arrays with no element equal to more than two of its horizontal, vertical and antidiagonal neighbors and with new values introduced in order 0 sequentially upwards.
Terms
- a(0) =8a(1) =50a(2) =116a(3) =302a(4) =726a(5) =1709a(6) =3996a(7) =9346a(8) =21891a(9) =51367a(10) =120680a(11) =283746a(12) =667466a(13) =1570516a(14) =3695871a(15) =8698086a(16) =20471383a(17) =48181359a(18) =113400534a(19) =266902849a(20) =628191882a(21) =1478536037a(22) =3479939872a(23) =8190523786a(24) =19277542258a(25) =45372392065a(26) =106790273799
External references
- oeis: A280600