Forum Discussion
Create a 'Triforce' array (Sierpiński Triangle) with a formula
I've been studying 'pyramid' arrays lately and with a new Zelda title out, I was inspired to generate a left-justified 'Triforce' array with a formula. Sierpiński triangle - Wikipedia Triforce - Wi...
On another note I complicated the formula a bit for aesthetic improvements:
=MAKEARRAY(K2,K2,LAMBDA(r,c, IF(AND(r = 1, c = 1), "\", IF(c = r,"\",IF(c<r, IF(ISODD(INT(COMBIN(r - 1, c - 1)) ), IF(ISODD(INT(COMBIN(r - 2, c-1 )*COMBIN(r-1, c ))),"X","\"), ""), "")))))
or using characters I found in the Cambria Math font I could get:
The left justified one is straightforward and maybe too easy! This one below (Image) would take some work to add spaces where needed for the sake of appearance in Excel:
1
1 1
1 1 1