Number of length 7+1 0..2*n arrays with the sum of the absolute values of adjacent differences equal to 7*n.

A249987

Number of length 7+1 0..2*n arrays with the sum of the absolute values of adjacent differences equal to 7*n.

Terms

    a(0) =1012a(1) =31380a(2) =245860a(3) =1293326a(4) =4598532a(5) =14027522a(6) =35380112a(7) =82176822a(8) =170479400a(9) =335836428a(10) =613774848a(11) =1082535196a(12) =1809905436a(13) =2948384694a(14) =4614428112a(15) =7080133636a(16) =10530399420a(17) =15419165316a(18) =22022418940a(19) =31058475666a(20) =42919172164

External references