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 A217435 Number of prime factors of n^n+(n-1)^(n-1), counted with multiplicity. 5
 1, 1, 1, 1, 4, 2, 3, 2, 3, 2, 5, 2, 6, 4, 2, 3, 6, 3, 3, 4, 6, 2, 7, 3, 5, 5, 3, 3, 5, 3, 3, 3, 7, 4, 5, 4, 3, 2, 2, 2, 6, 3, 6, 4, 5, 3, 8, 6, 6, 3, 5, 5, 5, 5, 3, 3, 5, 2, 8, 4, 4, 6, 6, 6, 8, 8, 4, 3, 4, 7, 7, 6, 6, 4, 4, 7, 9, 6, 7, 5, 9, 5, 7, 4, 3, 5, 6, 7, 9, 3, 2, 5 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,5 LINKS M. F. Hasler, Table of n, a(n) for n = 1..112 W. Nissen, np ( n ) = n^n + (n+1)^(n+1) — 2 prominent questions, Oct 02 2012 W. Nissen, Prime factors of np ( n ) = n^n + (n+1)^(n+1), Up for the Count. FORMULA a(n) = A001222(A056788(n)). MAPLE A217435:=n->numtheory[bigomega](n^n+(n-1)^(n-1)): seq(A217435(n), n=1..30); # Wesley Ivan Hurt, Jan 27 2017 PROG (PARI) for(n=1, 999, print1(bigomega((n-1)^(n-1)+n^n)", ")) CROSSREFS Sequence in context: A068152 A278970 A182199 * A238352 A291357 A079636 Adjacent sequences:  A217432 A217433 A217434 * A217436 A217437 A217438 KEYWORD nonn,hard AUTHOR M. F. Hasler, Oct 02 2012 EXTENSIONS Data beyond a(49) from W. Nissen's web site. STATUS approved

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Last modified October 19 03:08 EDT 2019. Contains 328211 sequences. (Running on oeis4.)