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 A110833 a(n) = (prime(n)+1)^2. 3
 9, 16, 36, 64, 144, 196, 324, 400, 576, 900, 1024, 1444, 1764, 1936, 2304, 2916, 3600, 3844, 4624, 5184, 5476, 6400, 7056, 8100, 9604, 10404, 10816, 11664, 12100, 12996, 16384, 17424, 19044, 19600, 22500, 23104, 24964, 26896, 28224, 30276, 32400, 33124, 36864 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 FORMULA From Amiram Eldar, Jan 23 2021: (Start) a(n) = A008864(n)^2. Product_{n>=1} (1 + 1/a(n)) = A065486. Product_{n>=1} (1 - 1/a(n)) = A065472. (End) MATHEMATICA Table[(Prime[n] + 1)^2, {n, 200}] (* Vincenzo Librandi, Mar 27 2014 *) PROG (Magma) [(p+1)^2: p in PrimesUpTo(200)]; // Vincenzo Librandi, Mar 27 2014 (Python) from sympy import primerange print([(p+1)**2 for p in primerange(1, 192)]) # Michael S. Branicky, Sep 16 2021 CROSSREFS Cf. A008864, A065472, A065486. Sequence in context: A039788 A175652 A348233 * A225808 A076621 A134937 Adjacent sequences: A110830 A110831 A110832 * A110834 A110835 A110836 KEYWORD nonn,easy AUTHOR Giovanni Teofilatto, Sep 18 2005 EXTENSIONS Corrected and extended by Ray Chandler, Oct 08 2005 STATUS approved

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Last modified May 21 17:21 EDT 2024. Contains 372738 sequences. (Running on oeis4.)