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Search: id:A064467
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| A064467 |
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Primes in Pi: a(n) = first position in decimal expansion of Pi that matches the n-th prime, or 0 if there is no such position. |
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+0
3
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| 7, 1, 5, 14, 95, 111, 96, 38, 17, 187, 1, 47, 3, 24, 120, 9, 5, 220, 99, 40, 300, 14, 27, 12, 13, 853, 3487, 1488, 207, 363, 298, 1097, 860, 526, 2607, 394, 1658, 1411, 1183, 429, 439, 729, 1945, 169, 38, 705, 94, 136, 485, 186, 230, 1689, 1708, 1714, 1007, 614
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OFFSET
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1,1
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EXAMPLE
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A000040(4) = 7 = A000796(14) and A000796(i) <> 7 for i < 14, so a(4) = 14.
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MATHEMATICA
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p = ToString[ FromDigits[ RealDigits[ N[ Pi, 10^4]] [[1]]]]; Do[ Print[ StringPosition[p, ToString[ Prime[n]]] [[1]] [[1]]], {n, 1, 100} ]
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CROSSREFS
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Cf. A000040, A000796, A032445.
Adjacent sequences: A064464 A064465 A064466 this_sequence A064468 A064469 A064470
Sequence in context: A011478 A118307 A047875 this_sequence A089204 A107786 A026497
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KEYWORD
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base,nonn
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AUTHOR
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Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 03 2001
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