Number of nX1 1..6 arrays with every element value z a city block distance of exactly z from another element value z.

A209055

Number of nX1 1..6 arrays with every element value z a city block distance of exactly z from another element value z.

Terms

    a(0) =0a(1) =1a(2) =1a(3) =3a(4) =3a(5) =16a(6) =24a(7) =98a(8) =161a(9) =515a(10) =956a(11) =2641a(12) =5686a(13) =14869a(14) =33986a(15) =84574a(16) =196092a(17) =474284a(18) =1110888a(19) =2665506a(20) =6280574a(21) =15027417a(22) =35701279a(23) =85266546a(24) =202157753a(25) =480306818a(26) =1140496671a(27) =2711160051a(28) =6442522473a(29) =15326524978

External references