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A184425 Lower s-Wythoff sequence, where s=A000217 (triangular numbers). Complement of A184426. 2
1, 3, 4, 5, 7, 8, 9, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 23, 24, 25, 26, 27, 28, 30, 31, 32, 33, 34, 35, 36, 38, 39, 40, 41, 42, 43, 44, 45, 46, 48, 49, 50, 51, 52, 53, 54, 55, 56, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
See A184117 for the definition of lower and upper s-Wythoff sequences.
LINKS
MATHEMATICA
mex:=First[Complement[Range[1, Max[#1]+1], #1]]&;
s[n_]:=n (n+1)/2; 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, 40}]
Table[a[n], {n, 120}]
Table[b[n], {n, 100}]
CROSSREFS
Sequence in context: A024355 A194413 A183574 * A276212 A137905 A285958
KEYWORD
nonn
AUTHOR
Clark Kimberling, Jan 14 2011
STATUS
approved

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Last modified June 18 23:41 EDT 2024. Contains 373489 sequences. (Running on oeis4.)