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A179516
a(1) = 73, a(n) = prime(a(n-1)) - 4*a(n-1).
7
73, 75, 79, 85, 99, 127, 201, 425, 1253, 5199, 29945, 229823, 2275065, 28132841, 423135497, 7573775211, 158441583469, 3816126076107, 104494456797095
OFFSET
1,1
MATHEMATICA
NestList[ Prime@# - 4# &, 73, 18]
KEYWORD
nonn
AUTHOR
Robert G. Wilson v, Jul 17 2010
STATUS
approved