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.

Previous Showing 11-18 of 18 results.

A335163 Nim n-th power of 4.

Original entry on oeis.org

1, 4, 6, 14, 5, 2, 8, 11, 7, 10, 3, 12, 13, 9, 15, 1, 4, 6, 14, 5, 2, 8, 11, 7, 10, 3, 12, 13, 9, 15, 1, 4, 6, 14, 5, 2, 8, 11, 7, 10, 3, 12, 13, 9, 15, 1, 4, 6, 14, 5, 2, 8, 11, 7, 10, 3, 12, 13, 9, 15, 1, 4, 6, 14, 5, 2, 8, 11, 7, 10, 3, 12, 13, 9, 15, 1, 4
Offset: 0

Views

Author

N. J. A. Sloane, Jun 12 2020

Keywords

Crossrefs

A row of the array in A335162.

Programs

  • PARI
    Vec((1 + 4*x + 6*x^2 + 14*x^3 + 5*x^4 + 2*x^5 + 8*x^6 + 11*x^7 + 7*x^8 + 10*x^9 + 3*x^10 + 12*x^11 + 13*x^12 + 9*x^13 + 15*x^14) / (1 - x^15) + O(x^80)) \\ Colin Barker, Jun 16 2020
    
  • PARI
    a(n)=[1, 4, 6, 14, 5, 2, 8, 11, 7, 10, 3, 12, 13, 9, 15][n%15+1]; \\ Joerg Arndt, Jun 16 2020

Formula

a(n+15) = a(n). - Rémy Sigrist, Jun 12 2020
G.f.: (1 + 4*x + 6*x^2 + 14*x^3 + 5*x^4 + 2*x^5 + 8*x^6 + 11*x^7 + 7*x^8 + 10*x^9 + 3*x^10 + 12*x^11 + 13*x^12 + 9*x^13 + 15*x^14) / (1 - x^15). - Colin Barker, Jun 16 2020

Extensions

More terms from Rémy Sigrist, Jun 12 2020

A335169 Nim n-th power of 10.

Original entry on oeis.org

1, 10, 14, 13, 8, 1, 10, 14, 13, 8, 1, 10, 14, 13, 8, 1, 10, 14, 13, 8, 1, 10, 14, 13, 8, 1, 10, 14, 13, 8, 1, 10, 14, 13, 8, 1, 10, 14, 13, 8, 1, 10, 14, 13, 8, 1, 10, 14, 13, 8, 1, 10, 14, 13, 8, 1, 10, 14, 13, 8, 1, 10, 14, 13, 8, 1, 10, 14, 13, 8, 1, 10
Offset: 0

Views

Author

N. J. A. Sloane, Jun 12 2020

Keywords

Crossrefs

A row of the array in A335162.

Formula

a(n+5) = a(n). - Rémy Sigrist, Jun 12 2020

Extensions

More terms from Rémy Sigrist, Jun 12 2020

A356522 Numbers that are nim cubes; numbers in A335170.

Original entry on oeis.org

0, 1, 8, 10, 13, 14, 16, 17, 20, 21, 24, 25, 30, 31, 36, 38, 45, 47, 49, 50, 61, 62, 72, 74, 76, 78, 88, 90, 93, 95, 105, 106, 108, 111, 113, 114, 117, 118, 128, 130, 131, 133, 136, 138, 139, 141, 145, 151, 152, 158, 160, 161, 163, 167, 169, 170, 171, 173, 177, 182, 186
Offset: 1

Views

Author

Jianing Song, Aug 10 2022

Keywords

Comments

Also numbers in A335172, or numbers that are nim (3*2^m)-th powers for each m.
There are (2^2^k - 1)/3 + 1 terms <= 2^2^k - 1 for each k >= 1. This is because {0,1,...,2^2^k-1} together with the nim operations makes a field isomorphic to GF(2^2^k).

Examples

			8 is a term because (6 N* 6) N* 6 = 5 N* 6 = 8, where N* denotes the nim multiplication.
		

Crossrefs

Cf. A051175, A335170, A335172. See also A335162 for nim powers.

Programs

A335164 Nim n-th power of 5.

Original entry on oeis.org

1, 5, 7, 13, 4, 2, 10, 9, 6, 8, 3, 15, 14, 11, 12, 1, 5, 7, 13, 4, 2, 10, 9, 6, 8, 3, 15, 14, 11, 12, 1, 5, 7, 13, 4, 2, 10, 9, 6, 8, 3, 15, 14, 11, 12, 1, 5, 7, 13, 4, 2, 10, 9, 6, 8, 3, 15, 14, 11, 12, 1, 5, 7, 13, 4, 2, 10, 9, 6, 8, 3, 15, 14, 11, 12, 1, 5
Offset: 0

Views

Author

N. J. A. Sloane, Jun 12 2020

Keywords

Crossrefs

A row of the array in A335162.

Formula

a(n+15) = a(n). - Rémy Sigrist, Jun 12 2020

Extensions

More terms from Rémy Sigrist, Jun 12 2020

A335165 Nim n-th power of 6.

Original entry on oeis.org

1, 6, 5, 8, 7, 3, 13, 15, 4, 14, 2, 11, 10, 12, 9, 1, 6, 5, 8, 7, 3, 13, 15, 4, 14, 2, 11, 10, 12, 9, 1, 6, 5, 8, 7, 3, 13, 15, 4, 14, 2, 11, 10, 12, 9, 1, 6, 5, 8, 7, 3, 13, 15, 4, 14, 2, 11, 10, 12, 9, 1, 6, 5, 8, 7, 3, 13, 15, 4, 14, 2, 11, 10, 12, 9, 1, 6
Offset: 0

Views

Author

N. J. A. Sloane, Jun 12 2020

Keywords

Crossrefs

A row of the array in A335162.

Formula

a(n+15) = a(n). - Rémy Sigrist, Jun 12 2020

Extensions

More terms from Rémy Sigrist, Jun 12 2020

A335166 Nim n-th power of 7.

Original entry on oeis.org

1, 7, 4, 10, 6, 3, 14, 12, 5, 13, 2, 9, 8, 15, 11, 1, 7, 4, 10, 6, 3, 14, 12, 5, 13, 2, 9, 8, 15, 11, 1, 7, 4, 10, 6, 3, 14, 12, 5, 13, 2, 9, 8, 15, 11, 1, 7, 4, 10, 6, 3, 14, 12, 5, 13, 2, 9, 8, 15, 11, 1, 7, 4, 10, 6, 3, 14, 12, 5, 13, 2, 9, 8, 15, 11, 1, 7
Offset: 0

Views

Author

N. J. A. Sloane, Jun 12 2020

Keywords

Crossrefs

A row of the array in A335162.

Programs

  • Mathematica
    PadRight[{},120,{1,7,4,10,6,3,14,12,5,13,2,9,8,15,11}] (* Harvey P. Dale, Jan 02 2022 *)

Formula

a(n+15) = a(n). - Rémy Sigrist, Jun 12 2020

Extensions

More terms from Rémy Sigrist, Jun 12 2020

A335167 Nim n-th power of 8.

Original entry on oeis.org

1, 8, 13, 14, 10, 1, 8, 13, 14, 10, 1, 8, 13, 14, 10, 1, 8, 13, 14, 10, 1, 8, 13, 14, 10, 1, 8, 13, 14, 10, 1, 8, 13, 14, 10, 1, 8, 13, 14, 10, 1, 8, 13, 14, 10, 1, 8, 13, 14, 10, 1, 8, 13, 14, 10, 1, 8, 13, 14, 10, 1, 8, 13, 14, 10, 1, 8, 13, 14, 10, 1, 8, 13
Offset: 0

Views

Author

N. J. A. Sloane, Jun 12 2020

Keywords

Crossrefs

A row of the array in A335162.

Formula

a(n+5) = a(n). - Rémy Sigrist, Jun 12 2020

Extensions

More terms from Rémy Sigrist, Jun 12 2020

A335168 Nim n-th power of 9.

Original entry on oeis.org

1, 9, 12, 10, 11, 2, 14, 4, 15, 13, 3, 7, 8, 5, 6, 1, 9, 12, 10, 11, 2, 14, 4, 15, 13, 3, 7, 8, 5, 6, 1, 9, 12, 10, 11, 2, 14, 4, 15, 13, 3, 7, 8, 5, 6, 1, 9, 12, 10, 11, 2, 14, 4, 15, 13, 3, 7, 8, 5, 6, 1, 9, 12, 10, 11, 2, 14, 4, 15, 13, 3, 7, 8, 5, 6, 1, 9
Offset: 0

Views

Author

N. J. A. Sloane, Jun 12 2020

Keywords

Crossrefs

A row of the array in A335162.

Formula

a(n+15) = a(n). - Rémy Sigrist, Jun 12 2020

Extensions

More terms from Rémy Sigrist, Jun 12 2020
Previous Showing 11-18 of 18 results.