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 A208506 p^(p+1) + (p+1)^p, where p = prime(n). 2
 17, 145, 23401, 7861953, 3881436747409, 4731091158953433, 16248996011806421522977, 42832853457545958193355601, 535823088031930481975544151644865, 81325936178163422902293018227199467668020601 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The definition has been the erroneous description of A104128 (as pointed out by H. P. Dale), prior to correction by R. J. Mathar on Feb 27 2012. Sum of reciprocals rapidly converges to 0.065762941547548273299583... LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..70 MATHEMATICA ok[n_] := n^(n+1)+(n+1)^n; Table[ok[n], {n, Prime[Range[10]]}] (* Harvey P. Dale, Feb 27 2012 *) PROG (PARI) A208506(n)=(1+n=prime(n))^n+n^(n+1) CROSSREFS Sequence in context: A364155 A083294 A196780 * A299599 A244852 A064102 Adjacent sequences: A208503 A208504 A208505 * A208507 A208508 A208509 KEYWORD nonn AUTHOR M. F. Hasler, Feb 27 2012 STATUS approved

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Last modified November 29 21:12 EST 2023. Contains 367447 sequences. (Running on oeis4.)