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 1-8 of 8 results.

A059805 Natural numbers written with digits grouped in pairs and leading zeros omitted.

Original entry on oeis.org

12, 34, 56, 78, 91, 1, 11, 21, 31, 41, 51, 61, 71, 81, 92, 2, 12, 22, 32, 42, 52, 62, 72, 82, 93, 3, 13, 23, 33, 43, 53, 63, 73, 83, 94, 4, 14, 24, 34, 44, 54, 64, 74, 84, 95, 5, 15, 25, 35, 45, 55, 65, 75, 85, 96, 6, 16, 26, 36, 46, 56, 66, 76, 86, 97, 7, 17, 27, 37, 47, 57, 67
Offset: 1

Views

Author

Kazimierz Kurz (kurzk(AT)prokom.pl), Mar 01 2001

Keywords

Links

Crossrefs

Cf. A000027, A087406, A060936, A087407, A087408, A087409, A087075, A087410, A087411.
Cf. A091331, A091332.

Programs

  • Mathematica
    FromDigits /@ Partition[ Flatten[ IntegerDigits[ Table[ n, {n, 1, 77}]]], 2] (* Robert G. Wilson v *)
FromDigits/@Partition[Flatten[IntegerDigits/@Range[100]],2] (* Harvey P. Dale, Feb 13 2025 *)
  • PARI
    {c=0; d=[]; for(n=1, 99, while(#d<2, d=concat(d, digits(c++))); print1(d[1],d[2]", "); d=vecextract(d, "^..2"))} \\ M. F. Hasler, Oct 23 2014

Formula

a(2n-1)*100 + a(2n) = A091332(n); a(2n-1) = floor(A091332(n)/100), a(2n) = (A091332(n) mod 100). - M. F. Hasler, Oct 23 2014

Extensions

More terms from Jason Earls, Mar 24 2001

A060936 Multiples of 3 with digits grouped in pairs and leading zeros omitted.

Original entry on oeis.org

36, 91, 21, 51, 82, 12, 42, 73, 3, 33, 63, 94, 24, 54, 85, 15, 45, 76, 6, 36, 66, 97, 27, 57, 88, 18, 48, 79, 9, 39, 69, 91, 2, 10, 51, 8, 11, 11, 14, 11, 71, 20, 12, 31, 26, 12, 91, 32, 13, 51, 38, 14, 11, 44, 14, 71, 50, 15, 31, 56, 15, 91, 62, 16, 51, 68, 17, 11, 74
Offset: 1

Views

Author

Jason Earls, May 06 2001

Keywords

References

  • Norman Sullivan, Test Your Own IQ, Workman Publishing Co., New York, NY, 1994, pp. 54, 57.

Crossrefs

Cf. A008585, A059805, A087406, A087407, A087408, A087409, A087075, A087410, A087411.

Programs

  • Mathematica
    FromDigits /@ Partition[ Flatten[ IntegerDigits[ Table[ 3n, {n, 1, 60}]]], 2] (* Robert G. Wilson v *)

Extensions

More terms from Larry Reeves (larryr(AT)acm.org), May 07 2001
Offset changed to 1 by Georg Fischer, Dec 25 2022

A087075 Multiples of 7 with digits grouped in pairs and leading zeros omitted.

Original entry on oeis.org

71, 42, 12, 83, 54, 24, 95, 66, 37, 7, 78, 49, 19, 81, 5, 11, 21, 19, 12, 61, 33, 14, 1, 47, 15, 41, 61, 16, 81, 75, 18, 21, 89, 19, 62, 3, 21, 2, 17, 22, 42, 31, 23, 82, 45, 25, 22, 59, 26, 62, 73, 28, 2, 87, 29, 43, 1, 30, 83, 15, 32, 23, 29, 33, 63, 43, 35, 3, 57, 36, 43, 71
Offset: 1

Views

Author

N. J. A. Sloane, Oct 19 2003

Keywords

Crossrefs

Cf. A008589, A059805, A087406, A060936, A087407, A087408, A087409, A087410, A087411.

Programs

  • Mathematica
    FromDigits /@ Partition[ Flatten[ IntegerDigits[ Table[ 7n, {n, 1, 60}]]], 2] (* Robert G. Wilson v *)
(IntegerDigits/@(7 Range[16]))//peek//Flatten//Partition[ #, 2]&// Map[FromDigits, # ]& (* Ken Levasseur *)

Extensions

More terms from Ray Chandler, Oct 20 2003

A087406 Multiples of 2 with digits grouped in pairs and leading zeros omitted.

Original entry on oeis.org

24, 68, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 10, 1, 2, 10, 41, 6, 10, 81, 10, 11, 21, 14, 11, 61, 18, 12, 1, 22, 12, 41, 26, 12, 81, 30
Offset: 1

Views

Author

N. J. A. Sloane, Oct 19 2003

Keywords

Crossrefs

Cf. A005843, A059805, A060936, A087407, A087408, A087409, A087075, A087410, A087411.

Programs

  • Mathematica
    FromDigits /@ Partition[ Flatten[ IntegerDigits[ Table[ 2n, {n, 1, 65}]]], 2] (* Robert G. Wilson v *)
FromDigits/@Partition[Flatten[IntegerDigits/@(2*Range[80])],2] (* Harvey P. Dale, Apr 22 2022 *)

Extensions

More terms from Ray Chandler, Oct 20 2003

A087407 Multiples of 4 with digits grouped in pairs and leading zeros omitted.

Original entry on oeis.org

48, 12, 16, 20, 24, 28, 32, 36, 40, 44, 48, 52, 56, 60, 64, 68, 72, 76, 80, 84, 88, 92, 96, 10, 1, 4, 10, 81, 12, 11, 61, 20, 12, 41, 28, 13, 21, 36, 14, 1, 44, 14, 81, 52, 15, 61, 60, 16, 41, 68, 17, 21, 76, 18, 1, 84, 18, 81, 92, 19, 62, 0, 20, 42, 8, 21, 22, 16, 22, 2, 24, 22
Offset: 1

Views

Author

N. J. A. Sloane, Oct 19 2003

Keywords

Crossrefs

Cf. A008586, A059805, A087406, A060936, A087408, A087409, A087075, A087410, A087411.

Programs

  • Mathematica
    FromDigits /@ Partition[ Flatten[ IntegerDigits[ Table[ 4n, {n, 1, 60}]]], 2] (* Robert G. Wilson v *)

Extensions

More terms from Ray Chandler, Oct 20 2003

A087408 Multiples of 5 with digits grouped in pairs and leading zeros omitted.

Original entry on oeis.org

51, 1, 52, 2, 53, 3, 54, 4, 55, 5, 56, 6, 57, 7, 58, 8, 59, 9, 51, 0, 10, 51, 10, 11, 51, 20, 12, 51, 30, 13, 51, 40, 14, 51, 50, 15, 51, 60, 16, 51, 70, 17, 51, 80, 18, 51, 90, 19, 52, 0, 20, 52, 10, 21, 52, 20, 22, 52, 30, 23, 52, 40, 24, 52, 50, 25, 52, 60, 26, 52, 70, 27, 52, 80
Offset: 1

Views

Author

N. J. A. Sloane, Oct 19 2003

Keywords

Crossrefs

Cf. A008587, A059805, A087406, A060936, A087407, A087409, A087075, A087410, A087411.

Programs

  • Mathematica
    FromDigits /@ Partition[ Flatten[ IntegerDigits[ Table[ 5n, {n, 1, 60}]]], 2] (* Robert G. Wilson v *)

Extensions

More terms from Ray Chandler, Oct 20 2003

A087410 Multiples of 8 with digits grouped in pairs and leading zeros omitted.

Original entry on oeis.org

81, 62, 43, 24, 4, 85, 66, 47, 28, 8, 89, 61, 4, 11, 21, 20, 12, 81, 36, 14, 41, 52, 16, 1, 68, 17, 61, 84, 19, 22, 0, 20, 82, 16, 22, 42, 32, 24, 2, 48, 25, 62, 64, 27, 22, 80, 28, 82, 96, 30, 43, 12, 32, 3, 28, 33, 63, 44, 35, 23, 60, 36, 83, 76, 38, 43, 92, 40, 4, 8, 41, 64, 24
Offset: 1

Views

Author

N. J. A. Sloane, Oct 19 2003

Keywords

Crossrefs

Cf. A008590, A059805, A087406, A060936, A087407, A087408, A087409, A087075, A087411.

Programs

  • Mathematica
    FromDigits /@ Partition[ Flatten[ IntegerDigits[ Table[ 8n, {n, 1, 60}]]], 2] (* Robert G. Wilson v *)

Extensions

More terms from Ray Chandler, Oct 20 2003

A087411 Multiples of 9 with digits grouped in pairs and leading zeros omitted.

Original entry on oeis.org

91, 82, 73, 64, 55, 46, 37, 28, 19, 9, 91, 8, 11, 71, 26, 13, 51, 44, 15, 31, 62, 17, 11, 80, 18, 91, 98, 20, 72, 16, 22, 52, 34, 24, 32, 52, 26, 12, 70, 27, 92, 88, 29, 73, 6, 31, 53, 24, 33, 33, 42, 35, 13, 60, 36, 93, 78, 38, 73, 96, 40, 54, 14, 42, 34, 32, 44, 14, 50, 45, 94
Offset: 1

Views

Author

N. J. A. Sloane, Oct 19 2003

Keywords

Crossrefs

Cf. A008591, A059805, A087406, A060936, A087407, A087408, A087409, A087075, A087410.

Programs

  • Mathematica
    FromDigits /@ Partition[ Flatten[ IntegerDigits[ Table[ 9n, {n, 1, 60}]]], 2] (* Robert G. Wilson v *)

Extensions

More terms from Ray Chandler, Oct 20 2003
Showing 1-8 of 8 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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