

A109844


a(1) = 1, a(2) = 2, next terms up to a(2n1) are obtained by multiplying previous terms a(n1) by n+1, a(n2) by n+2 etc. a(2) by (2n2) and a(1) by 2n1. On similar lines a(2n) = 2n*a(2n2), a(2n+1) = (2n+1)*a(2n1) and so on.


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