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A165252 Triangle read by rows: Frequency with which the values of cos(2*pi/k) mod j, listed in A164823, occurs for each j >= 1, taken over k = 1:j-1. 6
0, 0, 1, 0, 2, 1, 0, 3, 0, 1, 0, 4, 1, 0, 2, 0, 5, 2, 1, 2, 2, 0, 6, 0, 2, 1, 0, 3, 0, 7, 1, 3, 1, 3, 1, 3, 0, 8, 1, 2, 2, 1, 2, 2, 4, 0, 9, 1, 1, 4, 2, 4, 3, 1, 4, 0, 10, 1, 0, 1, 3, 1, 2, 0, 2, 5 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,5

COMMENTS

The triangle of numbers is:

..j....Frequency of values over k

.......0..1..2..3..4..5..6..7..8..9..10

..1....0

..2....0..1

..3....0..2..1

..4....0..3..0..1

..5....0..4..1..0..2

..6....0..5..2..1..2..2

..7....0..6..0..2..1..0..3

..8....0..7..1..3..1..3..1..3

..9....0..8..1..2..2..1..2..2..4

.10....0..9..1..1..4..2..4..3..1..4

.11....0.10..1..0..1..3..1..2..0..2..5

LINKS

C. H. Gribble, Flattened triangle, for j = 1:100 and k = 1:j-1.

PROG

(Other) The FORTRAN program used to generate this sequence is too complex to be listed here.

CROSSREFS

Cf: A164822, A164823, A164831, A164846.

Sequence in context: A157409 A245960 A178616 * A127373 A200123 A187616

Adjacent sequences:  A165249 A165250 A165251 * A165253 A165254 A165255

KEYWORD

nonn,tabl

AUTHOR

Christopher Hunt Gribble, Sep 10 2009

STATUS

approved

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Last modified February 19 10:23 EST 2019. Contains 320310 sequences. (Running on oeis4.)