Stirling Numbers

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Problem

Print a 10x10 triangular array of Stirling numbers of the first kind.
From Wikipedia:
s(n+1,k) = -n*s(n,k) + s(n,k-1)
k>0, n>0
s(0,0) = 1
s(x,0) = s(0,x) = 0
(Shout out to Dr Francis L. Miksa published the 25x25 array in 1956 on a typewriter!)

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rejudge feature is enabled

now post-mortem time, all source codes will be revealed

Sample input:_

*NOTHING*

Sample output:

1
-1,1
2,-3,1
-6,11,-6,1
24,-50,35,-10,1
-120,274,-225,85,-15,1
720,-1764,1624,-735,175,-21,1
-5040,13068,-13132,6769,-1960,322,-28,1
40320,-109584,118124,-67284,22449,-4536,546,-36,1
-362880,1026576,-1172700,723680,-269325,63273,-9450,870,-45,1

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