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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A062215 Numbers k such that the smoothly undulating palindromic number (19*10^k - 91)/99 is a prime.

Original entry on oeis.org

3, 33, 133, 1969, 2335
Offset: 1

Views

Author

Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001

Keywords

Comments

Prime versus probable prime status and proofs are given in the author's table.
No further terms < 100000. - Ray Chandler, Aug 17 2011

Examples

			k=33 -> (19*10^33 - 91)/99 = 191919191919191919191919191919191.

Links

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Extensions

Edited by Ray Chandler, Aug 17 2011

A062217 Numbers k such that the smoothly undulating palindromic number (32*10^k - 23)/99 is a prime.

Original entry on oeis.org

5, 9, 11, 3015, 3407, 6959, 9599, 11399, 16593, 25883
Offset: 1

Views

Author

Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001

Keywords

Comments

Prime versus probable prime status and proofs are given in the author's table.
No further terms < 100000. - Ray Chandler, Aug 17 2011

Examples

			k=11 -> (32*10^11 - 23)/99 = 32323232323.

Links

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Extensions

Edited by Ray Chandler, Aug 17 2011

A062218 Numbers k such that the smoothly undulating palindromic number (35*10^k - 53)/99 is a prime.

Original entry on oeis.org

3, 5, 23, 2177, 3147, 4157, 22713, 28385
Offset: 1

Views

Author

Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001

Keywords

Comments

Prime versus probable prime status and proofs are given in the author's table.
No further terms < 100000. - Ray Chandler, Aug 17 2011

Examples

			k=23 -> (35*10^23 - 53)/99 = 35353535353535353535353.

Links

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Extensions

Edited by Ray Chandler, Aug 17 2011

A062219 Numbers k such that the smoothly undulating palindromic number (37*10^k - 73)/99 is a prime.

Original entry on oeis.org

3, 21, 27, 81, 315, 849, 1893, 2883, 9591, 14691
Offset: 1

Views

Author

Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001

Keywords

Comments

Prime versus probable prime status and proofs are given in the author's table.
No further terms < 100000. - Ray Chandler, Aug 17 2011

Examples

			k=21 -> (37*10^21 - 73)/99 = 373737373737373737373.

Links

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Extensions

Edited by Ray Chandler, Aug 17 2011

A062221 Numbers k such that the smoothly undulating palindromic number (72*10^k - 27)/99 is a prime.

Original entry on oeis.org

3, 5, 9, 17, 71, 99, 243, 7595, 9273, 53847
Offset: 1

Views

Author

Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001

Keywords

Comments

Prime versus probable prime status and proofs are given in the author's table.
No further terms < 100000. - Ray Chandler, Aug 17 2011

Examples

			k=17 -> (72*10^17 - 27)/99 = 72727272727272727.

Links

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Extensions

a(10)=53847 from Patrick De Geest, Aug 06 2004
Edited by Ray Chandler, Aug 17 2011

A062222 Numbers k such that the smoothly undulating palindromic number (73*10^k - 37)/99 is a prime.

Original entry on oeis.org

15, 39, 567, 2529, 14337
Offset: 1

Views

Author

Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001

Keywords

Comments

Prime versus probable prime status and proofs are given in the author's table.
No further terms < 100000. - Ray Chandler, Aug 17 2011

Examples

			k=15 -> (73*10^15 - 37)/99 = 737373737373737.

Links

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Extensions

Edited by Ray Chandler, Aug 17 2011

A062223 Numbers k such that the smoothly undulating palindromic number (74*10^k - 47)/99 is a prime.

Original entry on oeis.org

5, 17, 2069, 6815, 20417, 25745
Offset: 1

Views

Author

Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001

Keywords

Comments

Prime versus probable prime status and proofs are given in the author's table.
No further terms < 100000. - Ray Chandler, Aug 17 2011

Examples

			k=17 -> (74*10^17 - 47)/99 = 74747474747474747.

Links

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Extensions

Edited by Ray Chandler, Aug 17 2011

A062224 Numbers k such that the smoothly undulating palindromic number (75*10^k - 57)/99 is a prime.

Original entry on oeis.org

3, 17, 77, 143, 149, 513, 1079, 1415, 6249, 13265, 14579, 15293, 41657, 72941
Offset: 1

Views

Author

Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001

Keywords

Comments

Prime versus probable prime status and proofs are given in the author's table.
No further terms < 100000. - Ray Chandler, Aug 17 2011

Examples

			k=17 -> (75*10^17 - 57)/99 = 75757575757575757.

Links

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Extensions

a(13)=41657 from Ray Chandler, Nov 11 2010
a(14)=72941 from Ray Chandler, Mar 24 2011
Edited by Ray Chandler, Aug 17 2011

A062225 Numbers k such that the smoothly undulating palindromic number (78*10^k - 87)/99 is a prime.

Original entry on oeis.org

3, 5, 21, 27, 95, 2075, 2165, 3047, 3503, 16791, 34883
Offset: 1

Views

Author

Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001

Keywords

Comments

Prime versus probable prime status and proofs are given in the author's table.
No further terms < 100000. - Ray Chandler, Aug 17 2011

Examples

			k=21 -> (78*10^21 - 87)/99 = 787878787878787878787.

Links

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Extensions

Edited by Ray Chandler, Aug 17 2011

A062226 Numbers k such that the smoothly undulating palindromic number (79*10^k - 97)/99 is a prime.

Original entry on oeis.org

3, 357, 537, 1677, 3057, 51663, 66447
Offset: 1

Views

Author

Patrick De Geest and Hans Rosenthal (Hans.Rosenthal(AT)t-online.de), Jun 15 2001

Keywords

Comments

Prime versus probable prime status and proofs are given in the author's table.
No further terms < 100000. - Ray Chandler, Aug 17 2011

Examples

			k=357 -> (79*10^357 - 97)/99 = 7979797...7979797.

Links

Crossrefs

Cf. A062209-A062232, A059758, A032758.

Extensions

a(6)=51663 from Ray Chandler, Nov 11 2010
a(7)=66447 from Ray Chandler, Jan 30 2011
Edited by Ray Chandler, Aug 17 2011
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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