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Search: id:A114513
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| A114513 |
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Number of terms in s(n), where s(n) is defined at sequence A114511. |
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+0
2
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| 1, 3, 5, 7, 9, 13, 15, 21, 23, 31, 33, 35, 37, 47, 49, 63, 65, 67, 69, 71, 75, 91, 93, 115, 117, 119, 121, 123, 127, 129, 135, 159, 161, 193, 195, 229, 231, 267, 269, 271, 273, 275, 279, 281, 287, 289, 297, 335, 337, 385, 387, 389, 391, 393, 397, 399, 405, 407
(list; graph; listen)
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OFFSET
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0,2
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EXAMPLE
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s(3), as defined at A114511, is {0,0,0,0,1,0,2}; so a(3) = 7.
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MATHEMATICA
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s[0] = {0}; s[n_] := s[n] = Flatten[{s[n - 1], s[s[n - 1][[n]]], {n - 1}}]; Table[Length[s[n]], {n, 0, 57}] (*Chandler*)
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CROSSREFS
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Cf. A114511.
Sequence in context: A003553 A003532 A003543 this_sequence A003524 A058871 A121259
Adjacent sequences: A114510 A114511 A114512 this_sequence A114514 A114515 A114516
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KEYWORD
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easy,nonn
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AUTHOR
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Leroy Quet (qq-quet(AT)mindspring.com), Dec 03 2005
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EXTENSIONS
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Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Dec 05 2005
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