

A210604


Bisection of Recamán's sequence A005132.


2



0, 3, 2, 13, 12, 11, 10, 9, 8, 43, 42, 41, 42, 43, 44, 45, 46, 113, 114, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 29, 28, 27, 26, 157, 156, 155, 154, 153, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 367, 368, 369, 370, 151, 152
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OFFSET

1,2


COMMENTS

Also length of the horizontal edges of a rectangular polyspiral path. For the vertical edges see A210605. The mentioned polyspiral path is one of the three views of a rectangular polyhelix which is a threedimensional graphical representation of Recamán's sequence A005132.


LINKS

Table of n, a(n) for n=1..57.
Index entries for sequences related to Recamán's sequence


EXAMPLE

1) Written as an irregular array in which each row lists consecutive numbers in ascending order or in descending order:
0;
3,2;
13,12,11,10,9,8;
43,42,41;
42,43,44,45,46;
113,114;
39,38,37,36,35,34,33,32,31,30,29,28,27,26;
...
2) Written as an irregular array in which each row lists consecutive numbers in ascending order, in descending order or in descendingascending order:
0;
3,2;
13,12,11,10,9,8;
43,42,41,42,43,44,45,46;
113,114;
39,38,37,36,35,34,33,32,31,30,29,28,27,26;
...


CROSSREFS

Cf. A005132, A065056, A171175, A171178, A210605A210607.
Sequence in context: A131050 A219374 A084416 * A005352 A095131 A060149
Adjacent sequences: A210601 A210602 A210603 * A210605 A210606 A210607


KEYWORD

nonn,tabf


AUTHOR

Omar E. Pol, Mar 23 2012


STATUS

approved



