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 A304652 Digits of the Copeland-Erdős constant taken in groups of five digits. 0
 23571, 35711, 57111, 71113, 11131, 11317, 13171, 31719, 17192, 71923, 19232, 92329, 23293, 32931, 29313, 93137, 31374, 13741, 37414, 74143, 41434, 14347, 43475, 34753, 47535, 75359, 53596, 35961, 59616, 96167, 61677, 16771, 67717, 77173, 71737, 17379, 73798, 37983, 79838, 98389 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This sequence is presented by the Foo Bar Challenge, a recruitment tool for Google, as the challenge to renumber some entities with 5-digit ID numbers taken from the first 10004 places of the Copeland-Erdős constant. The ID numbers are to be left zero-padded as needed to ensure they all consist of five digits. Of course here in the OEIS leading zeros will just be dropped. The Foo Bar Challenge statement of the problem says nothing of the fact that there are duplicates among these well before 10000. LINKS Table of n, a(n) for n=1..40. MATHEMATICA numCopelandErdos = Flatten[IntegerDigits[Prime[Range[1000]]]]; Table[FromDigits[numCopelandErdos[[n ;; (n + 4)]]], {n, Length[numCopelandErdos] - 4}] CROSSREFS Cf. A033308, A068670. Sequence in context: A227483 A237508 A177827 * A230361 A069334 A118061 Adjacent sequences: A304649 A304650 A304651 * A304653 A304654 A304655 KEYWORD nonn,base AUTHOR Alonso del Arte, May 16 2018 STATUS approved

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Last modified June 15 22:50 EDT 2024. Contains 373412 sequences. (Running on oeis4.)