Number of 0..n arrays of length 5 with 0 never adjacent to n.

Terms

a(0) =2a(1) =99a(2) =634a(3) =2309a(4) =6306a(5) =14407a(6) =29114a(7) =53769a(8) =92674a(9) =151211a(10) =235962a(11) =354829a(12) =517154a(13) =733839a(14) =1017466a(15) =1382417a(16) =1844994a(17) =2423539a(18) =3138554a(19) =4012821a(20) =5071522a(21) =6342359a(22) =7855674a(23) =9644569a(24) =11745026a(25) =14196027a(26) =17039674a(27) =20321309a(28) =24089634a(29) =28396831