The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A176575

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A176575

Second edge diagonal of table A176577. (The first edge diagonal is A099627).
(history; published version)

#2 by Russ Cox at Sat Mar 31 13:23:39 EDT 2012

AUTHOR

_Alford Arnold (Alford1940(AT)aol.com), _, May 13 2010

Discussion

Sat Mar 31

13:23

OEIS Server: https://oeis.org/edit/global/889

#1 by N. J. A. Sloane at Tue Jun 01 03:00:00 EDT 2010

NAME

Second edge diagonal of table A176577. (The first edge diagonal is A099627).

DATA

1, 10, 36, 42, 136, 146, 170, 292, 528, 546, 586, 682, 1092, 1170, 2080, 2114, 2184, 2186, 2340, 2346, 2730, 4228, 4370, 4706, 8256, 8322, 8456, 8458, 8738, 8740, 8746, 9362, 9386, 10922, 16644, 16912, 16914, 17476, 17482, 18724, 18730, 32896, 33026

OFFSET

1,2

COMMENTS

Sequence A176575 can be useful in reconstructing table A176577.

Consider, for example, diagonal 10 18 21 34 37 43 66 69 75 ...

the highest power of two less than 10 is 8 and 10-8 is 2 (the "residual").

Construct the sequence 10,18,34,66,... by doubling each term and subtracting

the residual. The remaining terms are formed by using the rule "2x+1":

10..18..34..66..

21..37..69..

43..75..

87..

EXAMPLE

A176577 begins

1

2...10

3...18...36

4...21...68...42

5...34...73...74..136

7...37..132...85..264..146

so a(n) begins:

1..10..36..42..136..146..

CROSSREFS

Cf. A099627 A176577

KEYWORD

nonn,uned,new

AUTHOR

Alford Arnold (Alford1940(AT)aol.com), May 13 2010

STATUS

approved