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треугольные числа
Portuguese
número triangular
Spanish
numero triangular
Catalan
nombre triangular
Figurate number.
trigonal number
integer sequence
complete sequence
Russian
треугольные числа
No examples available for any of the synonyms
1
Place one counter on the table-thatis, the first
triangular
number
.
2
But indeed unity is triangular ; for every
triangular
number
(Triangular numbers are those of which equilateral triangles can be formed in this way:
3
Now for a little puzzle in
triangular
numbers
.
4
Every whole number is either triangular , or the sum of two
triangular
numbers
or the sum of three
triangular
numbers
.
5
The analogous series for
triangular
numbers
is 1, 3, 6, 1, 6, 3, 1, 9, 9.
6
666 a
triangular
number
(1+2+3+4+5...+36), better symmetry than 616.
triangular
number
triangular
Russian
треугольные числа
треугольное число
Portuguese
número triangular
Spanish
numero triangular
trianón
número triangular
números triangulares
trianon
numeros triangulares
Catalan
nombre triangular