Number of 0..n arrays of length 7 with each element differing from at least one neighbor by 2 or more, starting with 0.

A221518

Number of 0..n arrays of length 7 with each element differing from at least one neighbor by 2 or more, starting with 0.

Terms

    a(0) =0a(1) =8a(2) =248a(3) =2088a(4) =9940a(5) =33860a(6) =92934a(7) =219352a(8) =463208a(9) =898020a(10) =1626970a(11) =2789864a(12) =4570812a(13) =7206628a(14) =10995950a(15) =16309080a(16) =23598544a(17) =33410372a(18) =46396098a(19) =63325480a(20) =85099940a(21) =112766724a(22) =147533782a(23) =190785368a(24) =244098360a(25) =309259300a(26) =388282154

External references