acemuzzy wrote:So yeah rather than pascal's triangle, which is 1 2 1, this is 1 (2x2) 1
and for the next line, it's 1, 3x3, 3x3, 1 = 20
then 1, 4x4, 6x6, 4x4, 1 = 1+16+36+16+1 = 70 WHOOP
So that generalises to sum(i=1..n) (nCi)^2, which probably has a nicer way of expressing it, but I can't work out what immediately
acemuzzy wrote:Meanwhile...
A caterpillar is on one side of a 1m wide rubber bridge. He crawls 1cm, after which the gap stretches by another meter, to become 2m wide. He crawls another 1cm, at which point the gap stretches to 3m. How long does it take him to get to the other side?
cockbeard wrote:@chumpSpoiler:
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