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 A116988 Sum of digits of (10^n)!. 2
 1, 27, 648, 10539, 149346, 1938780, 23903442, 284222502, 3292100235, 37420852599 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 COMMENTS Cf. A004152 Sum of digits of factorial numbers, A113364 1,27,648,16245,... with first three terms coinciding with this SEQ. LINKS EXAMPLE a(1)=27 because 10!=3628800 and 3+6+2+8+8+0+0=27. MATHEMATICA Do[Print[Total[IntegerDigits[(10^n)! ]]], {n, 0, 7}] PROG (Python) from math import factorial def A116988(n):     return sum(int(d) for d in str(factorial(10**n))) # Chai Wah Wu, May 21 2018 CROSSREFS Cf. A004152, A113364. Sequence in context: A046359 A223500 A060603 * A113364 A095898 A014914 Adjacent sequences:  A116985 A116986 A116987 * A116989 A116990 A116991 KEYWORD hard,more,nonn,base AUTHOR Zak Seidov, Apr 02 2006 EXTENSIONS One more term from Ryan Propper, Jun 27 2007 a(9) from Chai Wah Wu, May 21 2018 STATUS approved

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Last modified August 15 16:02 EDT 2020. Contains 336505 sequences. (Running on oeis4.)