A140692 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

Other ways to Give

A140692

Natural numbers which map to the cyclic partitions; cf. A140691 for the complete set.

1, 2, 4, 8, 6, 16, 10, 32, 18, 12, 14, 64, 34, 20, 22, 128, 66, 36, 38, 24, 26, 30, 256, 130, 68, 70, 40, 42, 46, 28, 512, 258, 132, 134, 72, 74, 78, 44

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Note that A002865 gives the number of entries per column.

LINKS

Table of n, a(n) for n=1..38.

EXAMPLE

Table A140691 begins

1..2..4..8..16..32

..3..5..9..17..33

.....7.11..19..35

.......15..23..39

...........31..47

...............63

.................

........6..10..18

...........13..21

...............27

since each matching case, say x, is generated by the rule "2x+1",

only the even cases map to cyclic partitions; so the sequence begins

1..2..4..8..16..32

........6..10..18

...............12

...............14

CROSSREFS

Cf. A002865, A140691.

Sequence in context: A253886 A253885 A336350 * A048640 A242353 A277331

Adjacent sequences: A140689 A140690 A140691 * A140693 A140694 A140695

KEYWORD

nonn

AUTHOR

Alford Arnold, May 23 2008

STATUS

approved