A184416 - OEIS

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A184416

Upper s(n)-Wythoff sequence, where s(n)=floor[(n+2)/3]. Complement of A184415.

2, 4, 6, 9, 10, 13, 15, 17, 19, 22, 24, 25, 28, 31, 32, 35, 36, 39, 41, 44, 45, 48, 50, 51, 55, 56, 58, 62, 63, 64, 68, 70, 71, 73, 77, 78, 80, 82, 85, 88, 89, 90, 94, 96, 98, 100, 102, 103, 108, 109, 110, 113, 115, 117, 120, 123, 124, 126, 127, 131, 133, 135, 137, 140, 141, 143, 145, 148, 151, 153, 154, 156, 159, 161, 163, 165, 168, 170, 173, 174, 176, 178, 180, 183, 186, 187, 189, 192, 194, 196, 198, 200, 202, 204, 207, 209, 212, 214, 215, 218

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..100.

EXAMPLE

See A184415.

MATHEMATICA

mex:=First[Complement[Range[1, Max[#1]+1], #1]]&;

s[n_]:=Floor[(n+2)/3]; a[1]=1; b[n_]:=b[n]=s[n]+a[n];

a[n_]:=a[n]=mex[Flatten[Table[{a[i], b[i]}, {i, 1, n-1}]]];

Table[s[n], {n, 20}]