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A045517 Factorials with initial digit '5'. 18
5040, 51090942171709440000, 523022617466601111760007224100074291200000000, 5502622159812088949850305428800254892961651752960000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Benford's law shows that this sequence will contain about (log 6 - log 5)/log 10 =~ 8% of factorials. [From Charles R Greathouse IV, Nov 13 2010]

LINKS

Table of n, a(n) for n=1..4.

Index entries for sequences related to Benford's law

MATHEMATICA

Select[Range[100]!, First[IntegerDigits[#]]==5&] (* Harvey P. Dale, Sep 06 2016 *)

CROSSREFS

For factorials with initial digit d (1 <= d <= 9) see A045509, A045510, A045511, A045516, A045517, A045518, A282021, A045519; A045520, A045521, A045522, A045523, A045524, A045525, A045526, A045527, A045528, A045529. See also A000142.

Sequence in context: A172618 A072242 A271947 * A068897 A200730 A229674

Adjacent sequences:  A045514 A045515 A045516 * A045518 A045519 A045520

KEYWORD

nonn,base

AUTHOR

Jeff Burch

STATUS

approved

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Last modified February 24 21:30 EST 2018. Contains 299628 sequences. (Running on oeis4.)