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A022433 a(n) = c(n-1) + c(n-3) where c is the sequence of numbers not in a. 1
1, 3, 5, 8, 11, 15, 17, 21, 23, 26, 29, 32, 35, 38, 41, 44, 47, 51, 53, 57, 59, 63, 65, 69, 71, 75, 77, 81, 83, 87, 89, 93, 95, 98, 101, 104, 107, 110, 113, 116, 119, 122, 125, 128, 131, 134 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Ivan Neretin, Table of n, a(n) for n = 0..10000

MATHEMATICA

Fold[Append[#1, Plus @@ Complement[Range[Max@#1 + 3], #1][[{#2, #2 + 2}]]] &, {1, 3, 5}, Range[43]] (* Ivan Neretin, Mar 30 2017 *)

CROSSREFS

Cf. A022424 and references therein.

Sequence in context: A062009 A062484 A260273 * A284442 A207038 A081401

Adjacent sequences:  A022430 A022431 A022432 * A022434 A022435 A022436

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified July 23 18:47 EDT 2017. Contains 289690 sequences.