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A294848 a(n) is the total number of horizontal line segments in the diagram of the symmetries of sigma described in A236104 after n-th stage, with a(0) = 1. 2
1, 2, 3, 4, 6, 7, 10, 11, 14, 16, 19, 20, 24, 25, 28, 32, 37, 38, 43, 44, 49, 53, 56, 57, 63, 66, 69, 73, 80, 81 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
Since the diagram is symmetrics a(n) is also the number of vertical line segments after n-th stage. For a diagram see A294847.
LINKS
FORMULA
a(n) = A294847(n)/2.
CROSSREFS
Sequence in context: A120440 A284384 A049995 * A055802 A114220 A134519
KEYWORD
nonn,more
AUTHOR
Omar E. Pol, Nov 09 2017
STATUS
approved

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Last modified May 24 12:49 EDT 2024. Contains 372773 sequences. (Running on oeis4.)