Number of nX3 0..1 arrays with every element equal to 0, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

A299556

Number of nX3 0..1 arrays with every element equal to 0, 2, 3, 5, 7 or 8 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =1a(1) =7a(2) =5a(3) =15a(4) =21a(5) =57a(6) =121a(7) =289a(8) =747a(9) =1901a(10) =5017a(11) =13531a(12) =36501a(13) =99555a(14) =272873a(15) =748887a(16) =2061111a(17) =5679261a(18) =15657685a(19) =43198325a(20) =119216101a(21) =329067269a(22) =908467521a(23) =2508239639a(24) =6925531875a(25) =19123005315a(26) =52804249441a(27) =145810426239a(28) =402636515557

External references