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Search: id:A053066
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| A053066 |
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Alternately append n-th prime to end or beginning of previous term. |
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+0
1
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| 2, 23, 523, 5237, 115237, 11523713, 1711523713, 171152371319, 23171152371319, 2317115237131929, 312317115237131929, 31231711523713192937, 4131231711523713192937, 413123171152371319293743
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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Felice Russo, A set of new Smarandache functions, sequences and conjectures in number theory, American Research Press 2000
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LINKS
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M. L. Perez et al., eds., Smarandache Notions Journal
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MATHEMATICA
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a = {2}; For[n = 2, n < 30, n++, If[EvenQ[n], AppendTo[a, FromDigits[ Join[IntegerDigits[a[[ -1]]], IntegerDigits[Prime[n]]]]], AppendTo[a, FromDigits[Join[ IntegerDigits[Prime[n]], IntegerDigits[a[[ -1]]]]]]]]; a - Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Jun 17 2007
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CROSSREFS
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Sequence in context: A054260 A053160 A167416 this_sequence A167417 A053161 A090731
Adjacent sequences: A053063 A053064 A053065 this_sequence A053067 A053068 A053069
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KEYWORD
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easy,nonn,base
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AUTHOR
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Felice Russo (felice.russo(AT)katamail.com), Feb 25 2000
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EXTENSIONS
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More terms from Stefan Steinerberger (stefan.steinerberger(AT)gmail.com), Jun 17 2007
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