A376998 Minimum number of matchsticks required to make equilateral triangles of side lengths 1, 2, ..., n simultaneously.

3, 7, 12, 17, 23

Offset

1,1

Comments

Upper bounds for a(6)-a(15) are 29, 35, 41, 48, 55, 62, 69, 77, 85, 93.

The triangles are allowed to be oriented upside-down. All triangles should be within the largest triangle.

This is the triangle equivalent of A294249.

Links

Table of n, a(n) for n=1..5.

John King, Triangles 1 to 15

Crossrefs

Cf. A294249.

Sequence in context: A310247 A350426 A332263 * A310248 A298022 A227133

Adjacent sequences: A376995 A376996 A376997 * A376999 A377000 A377001

Keyword

nonn,more

Author

John King, Oct 20 2024

Status

approved