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.

A055473 Powers of ten written in base 2.

Original entry on oeis.org

1, 1010, 1100100, 1111101000, 10011100010000, 11000011010100000, 11110100001001000000, 100110001001011010000000, 101111101011110000100000000, 111011100110101100101000000000, 1001010100000010111110010000000000, 1011101001000011101101110100000000000
Offset: 0

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Author

Henry Bottomley, Jun 27 2000

Keywords

Crossrefs

Programs

  • Mathematica
    FromDigits /@ IntegerDigits[10^Range[0, 9], 2] (* Jayanta Basu, Jul 12 2013 *)
  • PARI
    a(n)=subst(Pol(binary(10^n)),x,10)
    
  • PARI
    a(n) = fromdigits(binary(10^n)); \\ Michel Marcus, Apr 27 2022
    
  • Python
    def a(n): return int(bin(10**n)[2:])
    print([a(n) for n in range(12)]) # Michael S. Branicky, Apr 27 2022

Formula

a(n) = A007088(A011557(n)). - Seiichi Manyama, Apr 27 2022