Rémi Eismann · @decompwlj
124 followers · 284 posts · Server mathstodon.xyz

One day, one decomposition
A020757: Numbers that are not the sum of two triangular numbers

3D graph, threejs - webGL ➡️ decompwlj.com/3Dgraph/A020757.
2D graph, first 500 terms ➡️ decompwlj.com/2Dgraph500terms/

#webgl #threejs #graph #triangular #SuM #3d #php #javascript #oeis #sequence #mathematics #math #decompwlj

Last updated 2 years ago

Rémi Eismann · @decompwlj
125 followers · 282 posts · Server mathstodon.xyz

One day, one decomposition
A020756: Numbers which are the sum of two triangular numbers

3D graph, threejs - webGL ➡️ decompwlj.com/3Dgraph/A020756.
2D graph, first 500 terms ➡️ decompwlj.com/2Dgraph500terms/

#webgl #threejs #graph #numbers #triangular #SuM #3d #php #javascript #oeis #sequence #mathematics #math #decompwlj

Last updated 2 years ago

Actividad-Paranormal · @actividadparanormal
2 followers · 22 posts · Server masto.ai
Vingt Trois Seize 💎 · @vingtroiseize
278 followers · 712 posts · Server mastodon.world
WACOCA · @wacoca
11 followers · 24904 posts · Server mastodon.cloud
Rémi Eismann · @decompwlj
115 followers · 165 posts · Server mathstodon.xyz
Rémi Eismann · @decompwlj
110 followers · 119 posts · Server mathstodon.xyz
Alexander Muller · @alexandermuller
8 followers · 25 posts · Server mastodon.social
Xavier B. · @somenxavier
108 followers · 247 posts · Server mathstodon.xyz

Anyone knows a simple or elementary proof that $$n = \Delta_s + \Delta_k + \Delta_m$$ where $$\Delta_i = i(i+1)/2$$ the i-th number?

#triangular

Last updated 3 years ago

Khurram Wadee ✅ · @mkwadee
1034 followers · 10918 posts · Server mastodon.org.uk
@Om* · @atomjack
1255 followers · 13282 posts · Server mastodon.cloud
@Om* · @atomjack
1277 followers · 13320 posts · Server mastodon.cloud