The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A167448 Smallest number with n distinct positive cubic exponents in its prime factorization. 5
 1, 2, 768, 4403012567040, 384637545508886260255243527782400000000 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,2 LINKS Table of n, a(n) for n=0..4. FORMULA a(n) = Product_{k=1..n} prime(k)^((n-k+1)^3). EXAMPLE a(2)=768, which has a prime factorization of 2^8 * 3^1. MATHEMATICA Table[Product[Prime[k]^((n - k + 1)^3), {k, 1, n}], {n, 0, 5}] (* Vaclav Kotesovec, Aug 10 2021 *) CROSSREFS Subsequence of A025487. Sequence in context: A102969 A179960 A344663 * A320481 A078169 A226779 Adjacent sequences: A167445 A167446 A167447 * A167449 A167450 A167451 KEYWORD nonn AUTHOR Matthew Vandermast, Nov 09 2009 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 June 17 15:18 EDT 2024. Contains 373453 sequences. (Running on oeis4.)