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A022442 a(n) = c(n) + c(n-1) where c is the sequence of numbers not in a. 3
2, 4, 8, 11, 13, 16, 19, 22, 26, 29, 32, 35, 38, 41, 44, 47, 49, 52, 55, 58, 61, 64, 67, 70, 73, 76, 79, 82, 85, 88, 91, 94, 98, 101, 104, 107, 110, 113, 116, 119, 122, 125, 128, 131, 134, 137 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,1
LINKS
FORMULA
For n>0, a(n)=b(n) with b(0)=0, b(2n) = -b(n)+9n+3, b(2n+1) = -b(n)+9n+6-2[n==0]. - Ralf Stephan, Oct 23 2003
MATHEMATICA
Fold[Append[#1, Plus @@ Complement[Range[Max@#1 + 3], #1][[{#2 + 1, #2 + 2}]]] &, {2, 4}, Range[44]] (* Ivan Neretin, Mar 30 2017 *)
CROSSREFS
Cf. A099467 (complement).
Cf. A022424 and references therein.
Sequence in context: A078649 A161607 A318206 * A308163 A056689 A034037
KEYWORD
nonn,easy
AUTHOR
STATUS
approved

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Last modified June 12 11:18 EDT 2024. Contains 373331 sequences. (Running on oeis4.)