This site is supported by donations to The OEIS Foundation.

The OEIS is looking to hire part-time people to help edit core sequences, upload scanned documents, process citations, fix broken links, etc. - Neil Sloane, njasloane@gmail.com

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A103189 Number of divisors of prime p concatenated p times. 0
 4, 6, 8, 8, 96, 64, 64, 8, 64, 256, 32, 128, 128, 256, 64 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS EXAMPLE Number of divisors of 22 is 4, so the first term is 4. Number of divisors of 333 is 6, so the second term is 6. Number of divisors of 55555 is 8, so the third term is 8. MATHEMATICA Table[DivisorSigma[0, FromDigits[Flatten[IntegerDigits/@Table[Prime[n], {Prime[n]}]]]], {n, 15}] (* Harvey P. Dale, Jul 04 2014 *) CROSSREFS Sequence in context: A104173 A023991 A183005 * A083786 A199976 A165957 Adjacent sequences:  A103186 A103187 A103188 * A103190 A103191 A103192 KEYWORD nonn,base AUTHOR Parthasarathy Nambi, Mar 18 2005 EXTENSIONS More terms from Harvey P. Dale, Jul 04 2014 STATUS approved

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

Last modified May 27 22:57 EDT 2017. Contains 287210 sequences.