cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-1 of 1 results.

A249675 Multinomial coefficient (2+3+...+prime(n); 2,3,5,7,...,prime(n)) = A007504(n)! / A111180(n).

Original entry on oeis.org

1, 10, 2520, 49008960, 1052427228652800, 18543848132205515927808000, 3663312848979081767807855264321333760000, 1860046674511129497317809046448809961990598435124736000000, 46250563343969315569958487234182581699417368835772148395100189090556723200000000
Offset: 1

Views

Author

Keywords

Crossrefs

Programs

  • Maple
    a := n -> add(ithprime(k),k=1..n)!/mul(ithprime(k)!,k=1..n);
    seq(a(n),n=0..9); # Peter Luschny, Nov 04 2014
  • PARI
    a(n) = my(d=1,t=0); forprime(p=2,prime(n),d*=p!;t+=p);t!\d
Showing 1-1 of 1 results.