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 A045510 Factorials having initial digit '2'. 19
 2, 24, 20922789888000, 2432902008176640000, 25852016738884976640000, 265252859812191058636308480000000, 263130836933693530167218012160000000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Benford's law shows that this sequence will contain about (log 3 - log 2)/log 10 =~ 18% of factorials. [Charles R Greathouse IV, Nov 13 2010] LINKS PROG (PARI) lista(nn) = {for (n=1, nn, if (digits(n!)[1] == 2, print1(n!, ", ")); ); } \\ Michel Marcus, Dec 13 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. Sequence in context: A159932 A100010 A319761 * A226325 A065665 A321350 Adjacent sequences:  A045507 A045508 A045509 * A045511 A045512 A045513 KEYWORD nonn,base AUTHOR STATUS approved

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Last modified October 23 22:34 EDT 2019. Contains 328375 sequences. (Running on oeis4.)