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A170827 Sum of digits after the decimal point in the decimal expansion of (3/2)^n. 4
0, 5, 7, 15, 13, 29, 25, 37, 38, 43, 42, 67, 60, 67, 60, 85, 73, 77, 71, 79, 95, 107, 106, 100, 95, 120, 95, 137, 143, 146, 138, 140, 147, 166, 172, 163, 172, 177, 180, 193, 158, 174, 171, 184, 177, 188, 188, 223, 212, 241, 213, 198, 243, 229, 236, 245, 278, 281, 305, 304 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
Some terms appear more than once, 60 being the first. - Robert G. Wilson v, Mar 10 2015
LINKS
EXAMPLE
1.0
1.5
2.25
3.375
5.0625
7.59375
11.390625
17.0859375
25.62890625
MATHEMATICA
td[n_]:=Module[{rd=RealDigits[(3/2)^n]}, Total[Drop[rd[[1]], rd[[2]]]]]; Array[td, 60, 0] (* Harvey P. Dale, Dec 13 2011 *)
PROG
(PARI) a(n) = sumdigits(lift(Mod(15, 10^n)^n)) \\ Jianing Song, Sep 28 2022
CROSSREFS
Sequence in context: A314353 A043099 A030755 * A314354 A314355 A314356
KEYWORD
nonn,base
AUTHOR
Michel Lagneau, Dec 28 2009
EXTENSIONS
Edited by N. J. A. Sloane, Dec 28 2009
STATUS
approved

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Last modified April 21 12:56 EDT 2024. Contains 371870 sequences. (Running on oeis4.)