sunflower.kr
:nth-child(n)
n 2n+1 4n+1 4n+4 4n 5n-2 -n+3 0 1 1 4 – – 3 1 3 5 8 4 3 2 2 5 9 12 8 8 1 3 7 13 16 12 13 – 4 9 17 20 16 18 – 5 11 21 24 20 23 – 머리가 안돌아가서 적어둠….
