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 A058376 Where the race of the count of final nonzero digit of k! changes, starting at k=2. 0
 2, 16, 50, 80, 88, 108, 110, 264, 273, 291, 326, 336, 669, 671, 678, 685, 718, 721, 738, 764, 773, 791, 826, 836, 1433, 1435, 1558, 1560, 1616, 1629, 1636, 1694, 1696, 1764, 1773, 1791, 1826, 1836, 1928, 1935, 1968, 1971, 1988, 2014, 2023, 2041, 2076, 2086 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE a(1) = 2 to start the race. At 15! the number of final twos is 5 and so is the number of eights. But at 16, eights now lead twos, so a(2) = 16 to reflect this fact. When k=10000 is reached, the count stands at 2509 twos, 2486 fours, 2494 sixes, and 2510 eights. MATHEMATICA f[ n_Integer, m_Integer ] := (c = 0; p = 1; While[ d = Floor[ n/5^p ]; d > 0, c = c + d; p++ ]; Mod[ n!/10^c, m ]); a = Table[ 0, {4} ]; r = 4; Do[ b = f[ n, 10 ]; Switch[ b, 2, a[ [ 1 ] ]++, 4, a[ [ 2 ] ]++, 6, a[ [ 3 ] ]++, 8, a[ [ 4 ] ]++ ]; If[ a[ [ b/2 ] ] > a[ [ r/2 ] ], r = b; Print[ n ] ], {n, 2, 10^4} ] CROSSREFS Cf. A045547, A045548, A045549, A045550. Sequence in context: A063721 A232209 A012180 * A295906 A120948 A090453 Adjacent sequences: A058373 A058374 A058375 * A058377 A058378 A058379 KEYWORD nonn,base AUTHOR Robert G. Wilson v, Dec 19 2000 EXTENSIONS Offset 1 from Michel Marcus, Jul 25 2021 STATUS approved

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Last modified March 23 10:58 EDT 2023. Contains 361443 sequences. (Running on oeis4.)