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 A282021 Factorials with initial digit '7'. 18
 720, 710998587804863451854045647463724949736497978881168458687447040000000000000, 71569457046263802294811533723186532165584657342365752577109445058227039255480148842668944867280814080000000000000000000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Benford's law shows that this sequence will contain about (log(8) - log(7))/log(10) =~ 5.8% of all factorials. LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..22 MATHEMATICA Select[Range[100]!, First[IntegerDigits[#]] == 7 &] (* Vincenzo Librandi, Feb 08 2017 *) 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: A271946 A172727 A283048 * A186561 A119451 A119452 Adjacent sequences:  A282018 A282019 A282020 * A282022 A282023 A282024 KEYWORD nonn,base AUTHOR N. J. A. Sloane, Feb 07 2017 STATUS approved

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Last modified January 22 20:48 EST 2019. Contains 319365 sequences. (Running on oeis4.)