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 A098139 a(n) = 2^p + 3^p + 5^p + 7^p where p = prime(n). 0
 87, 503, 20207, 903983, 2026334063, 98111316047, 233393582711567, 11417969834487023, 27380668363187561903, 3220092020396733736776527, 157780038648336559551388463, 18562188680594166420755526825167 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE a(1) = 2^2 + 3^2 + 5^2 + 7^2 = 87. MATHEMATICA Table[2^Prime[n] + 3^Prime[n] + 5^Prime[n] + 7^Prime[n], {n, 1, 15}] (* Stefan Steinerberger, Feb 28 2006 *) Table[Total[Prime[Range[4]]^Prime[n]], {n, 20}] (* Harvey P. Dale, May 08 2012 *) PROG (PARI) main(m)=forprime(p=2, m, print1(2^p + 3^p + 5^p + 7^p, ", ")) \\ Anders Hellström, Aug 26 2015 CROSSREFS Sequence in context: A033631 A183724 A221312 * A359341 A297509 A259510 Adjacent sequences: A098136 A098137 A098138 * A098140 A098141 A098142 KEYWORD nonn AUTHOR Parthasarathy Nambi, Sep 27 2004 EXTENSIONS More terms from Stefan Steinerberger, Feb 28 2006 STATUS approved

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Last modified February 6 23:12 EST 2023. Contains 360111 sequences. (Running on oeis4.)