Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.

A298090

Number of nX5 0..1 arrays with every element equal to 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.

Terms

    a(0) =3a(1) =23a(2) =21a(3) =53a(4) =45a(5) =87a(6) =150a(7) =216a(8) =249a(9) =423a(10) =711a(11) =980a(12) =1560a(13) =2431a(14) =3368a(15) =5598a(16) =8655a(17) =12707a(18) =20146a(19) =30825a(20) =46191a(21) =71375a(22) =111256a(23) =169061a(24) =260564a(25) =403605a(26) =607501a(27) =943194a(28) =1456420a(29) =2221340

External references