Names for certain numbers.

Question

I am wondering if there is names for numbers with the following characteristics:

Numbers that end with 0.
Numbers divisible by 5.

If there are names for numbers with similar characteristics, I would be happy to learn about them as well. :)

Update:

10, 20, 30, ... is called?

5, 10, 15, 20, 25, 30, ... is called?

The only digit that ends with $0$ is $0$. – Rocket Man Nov 18 '13 at 10:39 — Rocket Man, Nov 18 '13 at 10:39
which happens to be divisible by 5.... – Eleven-Eleven Nov 18 '13 at 10:40 — Eleven-Eleven, Nov 18 '13 at 10:40
Maybe what you're looking for is "arithmetic progression"? – arsmath Nov 18 '13 at 10:47 — arsmath, Nov 18 '13 at 10:47

Shaun · Accepted Answer · 2013-11-18T10:56:19.450

Respectively:

(1) Positive multiples of $10$.

(2) Positive multiples of $5$.

If they satisfy both these properties, then they're positive multiples of $10$.

I don't think there are any other names for them, although they each form an arithmetic progression, which is a sequence of natural numbers. If you want to get really fancy, I suppose you could say, respectively, that they're all the numbers greater than zero that are:

(1) zero modulo $10$

(2) zero modulo $5$.

score 0 · Answer 2 · answered Nov 18 '13 at 11:00

The pattern $0,10,20,...$ is the:

Number of $3\times n$ binary matrices avoiding simultaneously the right angled numbered polyomino patterns (RANPP) $(00;1),(01,1)$ and $(11;0)$. An occurrence of a RANPP $(xy;z)$ in a matrix $A=(a(i,j))$ is a triple $(a(i_1,j_1)$, $a(i_1,j_2)$, $a(i_2,j_1))$ where $i_1<i_2$, $j_1<j_2$ and these elements are in the same relative order as those in the triple $(x,y,z)$. In general, the number of $m\times n\space 0-1$ matrices in question is given by $(n+2)\cdot2^{m-1}+2m(n-1)-2$ for $m>1$ and $n>1$.

That is from OEIS.

Names for certain numbers.

2 Answers2