A334700 Triangle read by rows: T(n,k) (n >= 1, 3 <= k <= n+2) = one-quarter of the number of k-sided cells in the n-th figure shown in A255011 (meaning the figure with 4n points on the perimeter).

1, 12, 2, 51, 28, 6, 170, 96, 14, 0, 415, 268, 112, 19, 2, 854, 598, 100, 14, 0, 0, 1587, 1309, 460, 126, 10, 0, 0

Offset: 1

Author

Scott R. Shannon and N. J. A. Sloane, May 18 2020

Keywords

• nonn
• tabf
• more

Comments

This is the triangle in A334699 with all entries divided by 4.

No formula is known.

For illustrations see A331452.

Examples

			Triangle begins:
1,
12, 2,
51, 28, 6,
170, 96, 14, 0,
415, 268, 112, 19, 2,
854, 598, 100, 14, 0, 0,
1587, 1309, 460, 126, 10, 0, 0
...
		

Links

• Scott R. Shannon, Data for triangles A334691 and A334699
• Scott R. Shannon, Colored illustration for n = 2

Crossrefs

Cf. A255011, A331452, A331449, A334690, A334691, A334695, A334696, A334699.