Integer sequencesDavid Reyes Alvarado

Electronical Engineering

Triangular numbers

Triangular numbers, as shown in the image, are a pattern of numbers that

form equilateral triangles. Each subsequent number in the sequence adds a

new row of dots to the triangle.[1]

[1] Taken from Study.com, (2015). What Are Triangular Numbers? - Definition, Formula & Examples | Study.com. [online] Available

at: http://study.com/academy/lesson/what-are-triangular-numbers-definition-formula-examples.html [Accessed 30 Sep. 2015].

Figure 1. Graphical representation of triangular numbers.

Triangular numbers

Figure 2. Code for triangular numbers.

Triangular numbers

Figure 3. Graphical representation for nth triangular number.

Deficient numbers

A deficient number is a number n for which the sum of divisors (n)

Dificient numbers

Figure 4. Code for deficient numbers (Part 1).

Deficient numbers

Figure 5. Code for deficient numbers (Part 2).

Deficient numbers

Figure 5. (a) Input the nth term to find. (b) Graphical representation for growing tendency of deficient numbers

(a)

(b)

Any question?

References

Sojamo.de, (2015). Javadocs: controlP5. [online] Available at:

http://www.sojamo.de/libraries/controlP5/reference/index.html [Accessed

30 Sep. 2015].

Thank you so much!