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.

A053062 Concatenate n, 2n, 3n, ... nn.

Original entry on oeis.org

1, 24, 369, 481216, 510152025, 61218243036, 7142128354249, 816243240485664, 91827364554637281, 102030405060708090100, 112233445566778899110121, 1224364860728496108120132144, 13263952657891104117130143156169, 14284256708498112126140154168182196
Offset: 1

Views

Author

Felice Russo, Feb 25 2000

Keywords

References

  • Felice Russo, A set of new Smarandache functions, sequences and conjectures in number theory, American Research Press 2000.

Crossrefs

Cf. A061082.

Programs

  • Maple
    a:= n-> parse(cat(j*n$j=1..n)):
    seq(a(n), n=1..14);  # Alois P. Heinz, Jan 24 2021
  • Python
    def a(n): return int("".join(str(n*i) for i in range(1, n+1)))
    print([a(n) for n in range(1, 15)]) # Michael S. Branicky, Jan 24 2021

Extensions

More terms from James Sellers, Feb 28 2000
Showing 1-1 of 1 results.