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Search: id:A114512
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| A114512 |
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Number of terms in s(n), where s(n) is defined at sequence A114510. |
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+0
2
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| 1, 3, 5, 9, 11, 17, 19, 21, 25, 35, 37, 49, 51, 53, 57, 59, 65, 83, 85, 105, 107, 129, 131, 133, 137, 163, 165, 167, 171, 173, 179, 181, 183, 187, 197, 233, 235, 273, 275, 277, 281, 283, 289, 291, 293, 297, 307, 309, 321, 371, 373, 425, 427, 481, 483, 485, 489
(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 A114510, is {0,0,1,0,2,0,0,1,3}; so a(3) = 9.
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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}}]; Table[Length[s[n]], {n, 0, 56}] (*Chandler*)
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CROSSREFS
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Cf. A114510.
Sequence in context: A072391 A036696 A111039 this_sequence A118113 A076193 A056533
Adjacent sequences: A114509 A114510 A114511 this_sequence A114513 A114514 A114515
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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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