A335800
a(n) is the number of regions formed by n-secting the angles of a decagon.
Original entry on oeis.org
1, 10, 151, 50, 471, 440, 981, 220, 1561, 1550, 2371, 1750, 3361, 3320, 4591, 2440, 5781, 5720, 7221, 6190, 8901, 8830, 10821, 6620, 12591, 12510, 14721, 13220, 17101, 16970, 19721, 14860, 21941, 22010, 24901, 22880, 27911, 27750, 31211, 25030, 33801, 34100
Offset: 1
A335801
a(n) is the number of vertices formed by n-secting the angles of a decagon.
Original entry on oeis.org
10, 11, 160, 31, 480, 371, 990, 171, 1570, 1431, 2380, 1551, 3370, 3131, 4600, 2211, 5790, 5481, 7230, 5851, 8910, 8521, 10830, 5751, 12600, 12151, 14730, 12721, 17110, 16541, 19730, 14231, 21950, 21531, 24910, 22201, 27920, 27201, 31220, 24181, 33810, 33501
Offset: 1
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.
Original entry on oeis.org
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
Offset: 1
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;
Showing 1-3 of 3 results.