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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A226679 Record-breaking values, for increasing k = A226630(n), of the conjectured number of primitive cycles of positive integers under iteration by the Collatz-like 3x-k function.

Original entry on oeis.org

3, 8, 35, 136, 171, 2908, 6326
Offset: 1

Views

Author

Geoffrey H. Morley, Jun 15 2013

Keywords

Comments

A cycle is called primitive if its elements are not a common multiple of the elements of another cycle.
The 3x-k function T_k is defined by T_k(x) = x/2 if x is even, (3x-k)/2 if x is odd, where k is odd.
For primitive cycles, GCD(k,6)=1.

Crossrefs

k = A226680(n).
Cf. A226629, A226663.

Extensions

Definition clarified by Geoffrey H. Morley, Jun 23 2013

A226664 Integer k associated with the record-breaking number A226663(n) of primitive Collatz-like 3x+k cycles.

Original entry on oeis.org

1, 5, 13, 233, 355, 431, 499, 1319, 1631, 6005, 6487, 14303, 45853, 71515, 186793
Offset: 1

Views

Author

Geoffrey H. Morley, Jun 15 2013

Keywords

Crossrefs

Cf. A226680.
Showing 1-2 of 2 results.

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