This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A087173 Smallest prime factor of n-th partition number. 3
 1, 2, 3, 5, 7, 11, 3, 2, 2, 2, 2, 7, 101, 3, 2, 3, 3, 5, 2, 3, 2, 2, 5, 3, 2, 2, 2, 2, 5, 2, 2, 3, 3, 2, 3, 17977, 7, 5, 3, 2, 3, 2, 3, 5, 2, 2, 2, 3, 5, 2, 3, 3, 3, 5, 2, 11, 2, 2, 2, 17, 3, 2, 3, 2, 2, 2, 1181, 3, 5, 2, 3, 11, 23, 2, 2, 7, 10619863, 2, 2, 2, 11, 5, 7, 2, 11, 2, 11, 3, 5, 2473 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS a(n) = A020639(A000041(n)). LINKS Giovanni Resta, Table of n, a(n) for n = 1..10000 Eric Weisstein's World of Mathematics, Least Prime Factor Eric Weisstein's World of Mathematics, Partition Function Eric Weisstein's World of Mathematics, Partition P Congruences EXAMPLE A000041(100) = 190569292 = 2*2*43*59*89*211, therefore a(100)=2. CROSSREFS Cf. A071963. Sequence in context: A194261 A194262 A039710 * A179335 A097858 A084408 Adjacent sequences:  A087170 A087171 A087172 * A087174 A087175 A087176 KEYWORD nonn AUTHOR Reinhard Zumkeller, Aug 23 2003 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
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified April 21 10:03 EDT 2019. Contains 322328 sequences. (Running on oeis4.)