The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A064531 Number of connected components remaining when decimal expansion of the number n is cut from a piece of paper. 4
 2, 1, 1, 1, 1, 1, 2, 1, 3, 2, 2, 1, 1, 1, 1, 1, 2, 1, 3, 2, 2, 1, 1, 1, 1, 1, 2, 1, 3, 2, 2, 1, 1, 1, 1, 1, 2, 1, 3, 2, 2, 1, 1, 1, 1, 1, 2, 1, 3, 2, 2, 1, 1, 1, 1, 1, 2, 1, 3, 2, 3, 2, 2, 2, 2, 2, 3, 2, 4, 3, 2, 1, 1, 1, 1, 1, 2, 1, 3, 2, 4, 3, 3, 3, 3, 3, 4, 3, 5, 4, 3, 2, 2, 2, 2, 2, 3, 2, 4, 3, 3, 2, 2, 2, 2 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 COMMENTS Assumes that 4 is represented without a hole. LINKS Table of n, a(n) for n=0..104. MATHEMATICA a[n_ /; 0 <= n <= 9] := a[n] = {2, 1, 1, 1, 1, 1, 2, 1, 3, 2}[[n + 1]]; a[n_] := Total[a /@ (id = IntegerDigits[n])] - Length[id] + 1 ; Table[a[n], {n, 0, 104}] (* Jean-François Alcover, Nov 22 2013 *) CROSSREFS Cf. A064529, A064530. Equals A064532 + 1. Sequence in context: A025919 A095684 A205565 * A274468 A211993 A185646 Adjacent sequences: A064528 A064529 A064530 * A064532 A064533 A064534 KEYWORD nonn,easy,base AUTHOR N. J. A. Sloane, Oct 07 2001 EXTENSIONS More terms from Matthew Conroy, Oct 09 2001 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified April 18 10:01 EDT 2024. Contains 371779 sequences. (Running on oeis4.)