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A074182 Largest power of n <= n!. 6

%I #22 Sep 08 2022 08:45:07

%S 1,2,3,16,25,216,2401,32768,59049,1000000,19487171,429981696,

%T 815730721,20661046784,576650390625,17592186044416,34271896307633,

%U 1156831381426176,42052983462257059,1638400000000000000

%N Largest power of n <= n!.

%H Alois P. Heinz, <a href="/A074182/b074182.txt">Table of n, a(n) for n = 1..400</a>

%F From _Danny Rorabaugh_, Apr 14 2015: (Start)

%F a(n) = n^A039960(n) = n^(A060151(n)-1).

%F a(n) = n^floor(log_n(n!)) for n>1.

%F a(n) = A074181(n)/n for n>2.

%F (End)

%o (Sage) [1] + [n^(floor(log(factorial(n))/log(n))) for n in range(2, 21)] # _Danny Rorabaugh_, Apr 14 2015

%o (Magma) [1] cat [n^Floor(Log(Factorial(n)) / Log(n)): n in [2..25]]; // _Vincenzo Librandi_, Apr 15 2015

%o (PARI) a(n)=if(n>3,n^logint(n!,n),n) \\ _Charles R Greathouse IV_, Oct 11 2015

%Y Cf. A039960, A060151, A074181.

%K nonn,easy

%O 1,2

%A _Amarnath Murthy_, Aug 31 2002

%E More terms from _Jason Earls_, Sep 02 2002

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Last modified July 15 03:29 EDT 2024. Contains 374323 sequences. (Running on oeis4.)