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 A247380 First differences of A117495. 2
 3, 7, 11, 23, 21, 37, 31, 51, 77, 49, 97, 85, 67, 99, 137, 149, 93, 169, 143, 111, 199, 167, 221, 281, 197, 153, 211, 163, 225, 533, 251, 323, 203, 479, 219, 367, 379, 315, 401, 413, 261, 601, 277, 369, 287, 751, 775, 415, 325, 429, 539, 343, 771, 575, 587, 599 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Alois P. Heinz, Table of n, a(n) for n = 1..10000 FORMULA a(n) = A117495(n+1) - A117495(n). MAPLE with(numtheory): a:= n-> ithprime(n+1)*n-ithprime(n)*(n-1): seq(a(n), n=1..60); # Alois P. Heinz, Sep 15 2014 PROG (PARI) a(n)=my(p=prime(n++)); p+n*(nextprime(p+1)-p) \\ Charles R Greathouse IV, Sep 15 2014 CROSSREFS Cf. A000040, A117495. Sequence in context: A028831 A244572 A137516 * A187265 A187266 A187267 Adjacent sequences: A247377 A247378 A247379 * A247381 A247382 A247383 KEYWORD easy,nonn AUTHOR Odimar Fabeny, Sep 15 2014 EXTENSIONS More terms from Alois P. Heinz, Sep 15 2014 STATUS approved

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Last modified August 14 23:14 EDT 2024. Contains 375171 sequences. (Running on oeis4.)