Challenge: Find the pattern

Question

Try to discover the pattern

*1
**3
***6
****10
*****15
******21

and do a code in any language which receive for an user input a number of lines to print.

Answer 1

one-liner:
https://code.sololearn.com/ccG6453AcySY/?ref=app

Answer 2

https://code.sololearn.com/c16vu4iycGNF/?ref=app

Answer 3

https://code.sololearn.com/co8of9kr6pgk/?ref=app

Answer 4

https://code.sololearn.com/cDCBSsXV045s/?ref=app

Answer 5

the first line is missing... Should be no stars, just 0 😉

Answer 6

https://code.sololearn.com/c8kNYbbsr1qq/?ref=app

Answer 7

here's my try in java :
https://code.sololearn.com/c3Od6y2lWVPK/?ref=app

Answer 8

https://code.sololearn.com/c1RAEig72Nt7/?ref=app

Answer 9

Here's mine, without protection against false input yet
https://code.sololearn.com/cruTD3Lx22Q3/?ref=app

Answer 10

Mine again, but in c++
https://code.sololearn.com/ccsfLs1Qki2L/?ref=app

Answer 11

https://code.sololearn.com/WRw4T1mLJy99/?ref=app

Answer 12

https://code.sololearn.com/cuuv63qXhx3K/?ref=app

Answer 13

https://code.sololearn.com/czbqscDwwLCr/?ref=app

Answer 14

Find me a more complex challenge and you will have my code !

Answer 15

Challenge accepted.
This is my code in Javascript.

https://code.sololearn.com/Wvk09ZDYeG9g/?ref=app

Answer 16

one more star and number of stars added to n each row

Answer 17

Hey.. I know I am probably late.. I just saw this challenge late night yesterday.. wanted to complete it as soon as I get back from school today...

so here's it..

https://code.sololearn.com/cnp698d6QxKe/?ref=app

Answer 18

Nikolay and VcC Im waiting for your great codes

Answer 19

mine

https://code.sololearn.com/c539Y9zyhxh7/?ref=app

Answer 20

Hello, my solution in JavaScript
https://code.sololearn.com/W8ssdY08Wnpy/