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 1-2 of 2 results.

A102191 Iccanobirt semiprimes (1 of 15): Semiprime numbers in A102111.

Original entry on oeis.org

4, 185, 1135955, 550783729, 10755767351826313, 885150880428474601, 145045760838001005739, 276700469046311728441, 17906534239981723909956235510218343, 23104799226903739899579090259021365554, 504198286800075916303995704410366363448429, 2363732899718211729861685511671459865604449872085443
Offset: 1

Views

Author

Jonathan Vos Post and Ray Chandler, Dec 31 2004

Keywords

Crossrefs

Cf. A001358, A102111, A102192-A102205.

Formula

a(n) = A102111(A102171(n)).

Extensions

Offset changed to 1 and more terms from Jinyuan Wang, Jul 31 2021

A102172 Iccanobirt semiprime indices (2 of 15): Indices of semiprime numbers in A102112.

Original entry on oeis.org

5, 9, 20, 29, 31, 32, 51, 54, 56, 76, 81, 83, 89, 98, 139, 145, 292, 314
Offset: 1

Views

Author

Jonathan Vos Post and Ray Chandler, Dec 31 2004

Keywords

Crossrefs

Cf. A001358, A102112, A102171-A102185, A102192.

Formula

A102112(a(n)) = A102192(n).

Extensions

Offset changed to 1 and a(17)-a(18) from Jinyuan Wang, Aug 08 2021
Showing 1-2 of 2 results.

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

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