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A133762
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Odd composite numbers such that the sum of any two terms, plus 1, is a prime.
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0
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9, 21, 49, 51, 57, 141, 1011, 2661, 21471, 64869, 357561, 1750989, 5409570201, 107563623099, 657637783581
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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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49 is a term in the sequence because 49 is an odd composite, 49+9+1=59 and 49+21+1=71, are both primes.
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CROSSREFS
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KEYWORD
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more,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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