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 A240983 Integers of the form 2^p*p^2 where p is the lesser of a pair of twin primes. 2
 72, 800, 247808, 37879808, 451508436992, 3696558092582912, 2006659878768217161728, 11902724720072940761120768, 25862607545856336249335738796081152, 1857706460417663797470176639788777472, 3270020989306416138620967939526071071138643968 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Subsequence of A071837. LINKS Chai Wah Wu, Table of n, a(n) for n = 1..86 FORMULA a(n) = 2^p*p^2, with p=A001359(n). a(n) = A007758(A001359(n)). - Michel Marcus, Aug 21 2014 EXAMPLE a(1)=2^3*3^2=72=A071837(3), a(4)=2^17*17^2=37879808=A071837(10). PROG (PARI) forprime(p=3, 100, isprime(2+p) && print1(p", ")) (Python) from sympy import prime, isprime A240983 = [2**p*p*p for p in (prime(n) for n in range(1, 2*10**3)) if isprime(p+2)] # Chai Wah Wu, Aug 27 2014 CROSSREFS Cf. A001359, A071837. Sequence in context: A086579 A113855 A082949 * A210627 A019562 A250423 Adjacent sequences:  A240980 A240981 A240982 * A240984 A240985 A240986 KEYWORD nonn AUTHOR Zak Seidov, Aug 21 2014 EXTENSIONS More terms from Chai Wah Wu, Aug 27 2014 STATUS approved

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Last modified July 21 22:02 EDT 2019. Contains 325210 sequences. (Running on oeis4.)