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Search: id:A090204
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| A090204 |
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a(n) = p-th digit of sqrt(2) where p = n-th prime. |
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+0
2
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| 4, 1, 2, 3, 3, 3, 0, 8, 6, 2, 9, 8, 6, 1, 3, 0, 6, 9, 0, 4, 8, 7, 8, 5, 1, 7, 5, 8, 6, 9, 6, 8, 2, 2, 0, 9, 1, 2, 9, 5, 7, 9, 7, 2, 5, 1, 1, 4, 8, 2, 7, 4, 8, 6, 3, 4, 7, 4, 0, 7, 2, 2, 3, 5, 6, 8, 5, 2, 7, 0, 7, 7, 5, 7, 7, 3, 6, 8, 1, 9, 8, 5, 7, 0, 4, 8, 4, 8, 5, 0, 4, 7, 5, 5, 7, 2, 2, 7, 5, 6, 2, 5, 4, 7, 6
(list; graph; listen)
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OFFSET
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2,1
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COMMENT
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The prime-th digits of sqrt(2).
Are the numbers in this sequence uniformly distributed? Could this sequence and A090201-A090203 be used as a random number generators?
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EXAMPLE
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The 5th prime is 11. The 11th digit of sqrt(2) is 3, the 5th term in the sequence.
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PROGRAM
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(PARI) \primeth.gp primeth(n) = { default(realprecision, 1000); p=Str(sqrt(2)*10^999); default(realprecision, 28); forprime(x=2, n, print1(mid(p, x, 1)", ") ) } mid(str, s, n) = { v =""; tmp = Vec(str); ln=length(tmp); for(x=s, s+n-1, v=concat(v, tmp[x]); ); return(v) }
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CROSSREFS
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Sequence in context: A131100 A064124 A106654 this_sequence A156915 A072046 A123609
Adjacent sequences: A090201 A090202 A090203 this_sequence A090205 A090206 A090207
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KEYWORD
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base,easy,nonn
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AUTHOR
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Cino Hilliard (hillcino368(AT)gmail.com), Jan 22 2004
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