Logo

Greetings from The On-Line Encyclopedia of Integer Sequences!

Hints

Search: id:A086358
Displaying 1-1 of 1 results found. page 1
     Format: long | short | internal | text      Sort: relevance | references | number      Highlight: on | off
A086358 Digital root of n!. +0
1
1, 2, 6, 6, 3, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9 (list; graph; listen)
OFFSET

1,2

FORMULA

a(n) = A010888[n! ] = fixed-point of A007953[n! ]; It equals n! modulo(9); at r = 0 use 9.

EXAMPLE

n=5, 5!=120, iteration list={120,3},a(5)=3.

MATHEMATICA

sud[x_] := Apply[Plus, DeleteCases[IntegerDigits[x], 0]] Table[FixedPoint[sud, w! ], {w, 1, 128}]

CROSSREFS

Cf. A086353-A086361, A007953, A010888, A038194, A029898.

Adjacent sequences: A086355 A086356 A086357 this_sequence A086359 A086360 A086361

Sequence in context: A097412 A105815 A136696 this_sequence A004152 A071678 A141329

KEYWORD

base,nonn

AUTHOR

Labos E. (labos(AT)ana.sote.hu), Jul 21 2003

page 1

Search completed in 0.002 seconds

Lookup | Welcome | Find friends | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
More pages | Superseeker | Maintained by N. J. A. Sloane (njas@research.att.com)

Last modified October 7 08:31 EDT 2008. Contains 144667 sequences.


AT&T Labs Research