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.

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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
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