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.

A110749 Triangle read by rows with the n-th row containing the first n multiples of n with digits reversed.

Original entry on oeis.org

1, 2, 4, 3, 6, 9, 4, 8, 21, 61, 5, 1, 51, 2, 52, 6, 21, 81, 42, 3, 63, 7, 41, 12, 82, 53, 24, 94, 8, 61, 42, 23, 4, 84, 65, 46, 9, 81, 72, 63, 54, 45, 36, 27, 18, 1, 2, 3, 4, 5, 6, 7, 8, 9, 1, 11, 22, 33, 44, 55, 66, 77, 88, 99, 11, 121, 21, 42, 63, 84, 6, 27, 48, 69, 801, 21, 231, 441
Offset: 1

Views

Author

Amarnath Murthy, Aug 10 2005

Keywords

Examples

			The triangle is:
1
2 4
3 6 9
4 8 21 61
5 1 15 2 52
etc
		

Crossrefs

The non-reversed digit triangle is A075362.

Programs

  • Mathematica
    Table[IntegerReverse[n*Range[n]],{n,20}]//Flatten (* Harvey P. Dale, Jul 14 2024 *)
  • PARI
    T(n, k) = subst(Polrev(digits(k*n)), x, 10); \\ Michel Marcus, Sep 16 2013

Extensions

More terms from Bruce Corrigan (scentman(AT)myfamily.com), Aug 10 2005