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Help me with this limit

Help me with this limit

by Anomit Ghosh -
Number of replies: 0
Let a1 = 1 and an = n(an-1+1) for n=2,3,....

Pn = (1 + 1/a1) (1 + 1/a2) ......  (1 +  1/an)

Then limn->infinity Pn is ??