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A118328
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Integer lengths of Catalan-primes: numbers n such that the concatenation of the first n decimal digits of Catalan's constant is prime.
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2
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OFFSET
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1,1
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LINKS
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EXAMPLE
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C = 0.915965594177..., so a(1) = 52 (the 52-digit number 915965...6721 is the 1st prime in the digit string).
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CROSSREFS
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KEYWORD
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nonn,more,bref,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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