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 A144550 Largest non-twin prime < n-th and (n+1)-th twin primes. 0
 2, 23, 37, 53, 67, 97, 131, 173, 223, 233, 263, 277, 307, 337, 409, 457, 509, 563, 593, 613, 631, 653, 797, 853, 877, 1013, 1039, 1087, 1129, 1223, 1259, 1283, 1297, 1307, 1423, 1447, 1471, 1601, 1613, 1663, 1693, 1709, 1783, 1867, 1913, 1993, 2017, 2069 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS FORMULA {A007510(k): nextprime(A007510(k)) in A077800}. - R. J. Mathar, May 01 2010 MAPLE isA077800 := proc(n) isprime(n) and ( isprime(n+2) or isprime(n-2)) ; end proc: isA007510 := proc(n) isprime(n) and not isA077800(n) ; end proc: isA144550 := proc(n) isA007510(n) and isA077800( nextprime(n)) ; end proc: for n from 2 to 2500 do if isA144550(n) then printf("%d, ", n) ; end if; end do: # R. J. Mathar, May 01 2010 CROSSREFS Cf. A077800, A088175. Sequence in context: A061448 A007510 A117242 * A106736 A045392 A107374 Adjacent sequences:  A144547 A144548 A144549 * A144551 A144552 A144553 KEYWORD nonn AUTHOR Juri-Stepan Gerasimov, Dec 31 2008 EXTENSIONS Corrected (1993 inserted) by R. J. Mathar, May 01 2010 STATUS approved

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Last modified January 17 19:58 EST 2019. Contains 319251 sequences. (Running on oeis4.)