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 1-4 of 4 results.

A094324 a(n) = 5 written in base n.

Original entry on oeis.org

11111, 101, 12, 11, 10, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5
Offset: 1

Views

Author

N. J. A. Sloane, Jun 04 2004

Keywords

Comments

The term 111....1111 should officially be called the "unary expansion", since in base 1 only the digit 0 may appear.

Crossrefs

Formula

From Elmo R. Oliveira, Jun 15 2024: (Start)
G.f.: x*(11111-11010*x-89*x^2-x^3-x^4-5*x^5)/(1-x).
a(n) = 5 for n > 5. (End)

A094325 a(n) = 6 written in base n.

Original entry on oeis.org

111111, 110, 20, 12, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6
Offset: 1

Views

Author

N. J. A. Sloane, Jun 04 2004

Keywords

Comments

The term 111....1111 should officially be called the "unary expansion", since in base 1 only the digit 0 may appear.

Crossrefs

Formula

From Elmo R. Oliveira, Jun 15 2024: (Start)
G.f.: x*(111111-111001*x-90*x^2-8*x^3-x^4-x^5-4*x^6)/(1-x).
a(n) = 6 for n > 6. (End)

A094327 a(n) = 9 written in base n.

Original entry on oeis.org

111111111, 1001, 100, 21, 14, 13, 12, 11, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9
Offset: 1

Views

Author

N. J. A. Sloane, Jun 04 2004

Keywords

Comments

The term 111....1111 should officially be called the "unary expansion", since in base 1 only the digit 0 may appear.

Crossrefs

Programs

  • Mathematica
    Join[{111111111},Table[FromDigits[IntegerDigits[9,n]],{n,2,90}]] (* Stefano Spezia, Nov 10 2023 *)

Formula

G.f.: x*(111111111 - 111110110*x - 901*x^2 - 79*x^3 - 7*x^4 - x^5 - x^6 - x^7 - x^8 - x^9)/(1 - x). - Stefano Spezia, Nov 10 2023

A072990 a(2) = 1000, a(n) = 18 - n for 3 <= n <= 9, a(n) = 8 for n >= 10.

Original entry on oeis.org

1000, 15, 14, 13, 12, 11, 10, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8
Offset: 2

Views

Author

Vincenzo Vennarini (vennarini(AT)hotmail.com), Aug 21 2002

Keywords

Crossrefs

Cf. A094326.

Formula

G.f.: x^2*(x^8+x^7+x^6+x^5+x^4+x^3+x^2+985*x-1000)/(x-1).

Extensions

Definition corrected by Georg Fischer, Aug 26 2024
Showing 1-4 of 4 results.