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A335803

Irregular table read by rows: n-sect the angles of a decagon. Then T(n,k) = number of k-sided polygons in that figure for k >= 3.

0, 0, 0, 0, 0, 0, 0, 1, 10, 30, 120, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 50, 150, 240, 60, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 250, 140, 40, 10, 300, 510, 130, 30, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 120, 90, 10

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,9

LINKS

Table of n, a(n) for n=1..71.

EXAMPLE

The table begins

0, 0, 0, 0, 0, 0, 0, 1;

10;

30, 120, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1;

50;

150, 240, 60, 20, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1;

250, 140, 40, 10;

300, 510, 130, 30, 0, 10, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1;

CROSSREFS

Cf. A332417 (n-sected sides, not angles), A335800 (regions), A335801 (vertices), A335802 (edges).

Sequence in context: A377068 A185829 A301664 * A259136 A098684 A268117

Adjacent sequences: A335800 A335801 A335802 * A335804 A335805 A335806

KEYWORD

nonn,tabf

AUTHOR

Lars Blomberg, Jun 25 2020

STATUS

approved

URL: https://oeis.org/A335803

⇱ A335803 - OEIS