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.

A290439 a(n) = A289677(3*n+1).

Original entry on oeis.org

0, 2, 4, 11, 22, 43, 85, 171, 366, 774, 1586, 3136, 6123, 12088, 24283, 49040, 99031, 200444, 405931
Offset: 0

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Author

N. J. A. Sloane, Aug 02 2017

Keywords

Comments

No formulas or recurrences are known for the important sequences A289670 and A289671. The essence of these two sequences is captured in the six entries A290436-A290441. Any numerical properties of these would be most welcome.

Crossrefs

Cf. A284116, A284119, A284121, A289670-A289677, A290436-A290441.

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

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