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 A210605 Bisection of Recamán's sequence A005132. 2
 1, 6, 7, 20, 21, 22, 23, 24, 25, 62, 63, 18, 17, 16, 15, 14, 79, 78, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 224, 225, 226, 227, 228, 75, 74, 73, 72, 71, 70, 69, 68, 67, 66, 65, 64, 265, 264, 263, 262, 261, 40, 265, 494, 495, 258, 259 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Also length of the vertical edges of a rectangular polyspiral path. For the horizontal edges see A210604. The mentioned polyspiral path is one of the three views of a rectangular polyhelix which is a three-dimensional graphical representation of Recamán's sequence A005132. LINKS EXAMPLE 1) Written as an irregular array in which each row lists consecutive numbers in ascending order or in descending order: 1; 6,7; 20,21,22,23,24,25; 62,63; 18,17,16,15,14; 79,78,77; 78,79,80,81,82,83,84,85,86,87,88,89,90,91; ... 2) Written as an irregular array in which each row lists consecutive numbers in ascending order, in descending order or in descending-ascending order: 1; 6,7; 20,21,22,23,24,25; 62,63; 18,17,16,15,14; 79,78,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91; ... CROSSREFS Cf. A005132, A065056, A171175, A171178, A210604-A210607. Sequence in context: A285819 A287760 A305675 * A175262 A081348 A002361 Adjacent sequences:  A210602 A210603 A210604 * A210606 A210607 A210608 KEYWORD nonn,tabf AUTHOR Omar E. Pol, Mar 23 2012 STATUS approved

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Last modified August 23 00:23 EDT 2019. Contains 326211 sequences. (Running on oeis4.)