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 1-5 of 5 results.

A116107 Numbers k such that k concatenated with k-8 gives the product of two numbers which differ by 7.

Original entry on oeis.org

52, 63716866, 48793687600063875363014809897052, 60020753655608135708762056127156, 60446518621981165303188950156776, 71135436903815748345367595855336, 72876856643103028189103298533248
Offset: 1

Views

Author

Giovanni Resta, Feb 06 2006

Keywords

Comments

Also numbers n such that n concatenated with n-2 gives the product of two numbers which differ by 5.

Examples

			63716866//63716864 = 79822843 * 79822848, where // denotes concatenation.

Crossrefs

Cf. A116099, A116106, A115429, A116112, A116238, A115426, A116146, A116276.

Extensions

Edited by N. J. A. Sloane, Apr 15 2007

A116237 n times n+6 gives the concatenation of two numbers m and m-8.

Original entry on oeis.org

7, 9, 97, 99, 425, 570, 724, 843, 997, 999, 7807, 9997, 9999, 36362, 63633, 99997, 99999, 326731, 673264, 999997, 999999, 4545451, 5454544, 9999997, 9999999, 47058820, 52941175, 99999997, 99999999, 331983804, 332667331, 384615383
Offset: 1

Views

Author

Giovanni Resta, Feb 06 2006

Keywords

Crossrefs

Cf. A116106, A116229, A116236, A116238, A116242.

A116243 n times n+7 gives the concatenation of two numbers m and m-7.

Original entry on oeis.org

38, 56, 32262230, 67737764, 79321054, 3341093417798787499091, 3861488851737861033959, 4747922651210186579785, 5252077348789813420209, 6138511148262138966035, 6658906582201212500903, 7232275368591793618229
Offset: 1

Views

Author

Giovanni Resta, Feb 06 2006

Keywords

Examples

			79321054 * 79321061 = 62918301//62918294, where // denotes
concatenation.

Crossrefs

Cf. A116112, A116238, A116242, A116244, A116250.

A116230 n times n+7 gives the concatenation of two numbers m and m-9.

Original entry on oeis.org

80, 77394226, 89158932, 36623663376237623663376334, 37633762366336633762366234, 62366237633663366237633760, 63376336623762376336623660, 86194223018927804587702127
Offset: 1

Views

Author

Giovanni Resta, Feb 06 2006

Keywords

Examples

			89158932 * 89158939 = 79493157//79493148, where // denotes
concatenation.

Crossrefs

Cf. A116099, A116229, A116231, A116238.

A116239 Numbers k such that k*(k+8) gives the concatenation of two numbers m and m-8.

Original entry on oeis.org

7743, 8017, 33294314, 66705679, 98000197, 340465755421, 476452552741, 523547447252, 659534244572, 866013200677, 998000001997, 3695104677080130, 3755782995538764, 4198081170077527, 4803478892324962, 5196521107675031
Offset: 1

Views

Author

Giovanni Resta, Feb 06 2006

Keywords

Examples

			98000197 * 98000205 = 96040393//96040385, where // denotes concatenation.

Crossrefs

Cf. A115429, A116238, A116240, A116244.
Showing 1-5 of 5 results.

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

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