The rth term of the 25th row is 25!/[r!(25-r)!] where r = 0,1,2,...,25 and k! denotes 1*2*3*...*k and 0! = 1
So
1
25
300
2,300
12,650
53,130
177,100
480,700
1,081,575
2,042,975
3,268,760
4,457,400
5,200,300
and then the same numbers in reverse order, all the way back to 1.
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