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A320104
Let f(1) = 1 + i (where i denotes the imaginary unit) and for n > 0, f(n+1) is the Gaussian prime in the first quadrant (with positive real part and nonnegative imaginary part) with least modulus that divides 1 + Product_{k=1..n} f(k) (in case of a tie minimize the imaginary part); a(n) is the imaginary part of f(n).
1
1, 1, 3, 0, 20, 5, 4, 15910, 2, 2, 1, 2, 6, 81598, 5, 366, 588, 5, 202, 111603136724, 104, 13, 246202, 0, 61, 492, 439943534049216658488928456219783705840806353246605875
OFFSET
1,3
COMMENTS
See A319920 for the square of the modulus of f and additional comments.
CROSSREFS
Cf. A319920.
Sequence in context: A151814 A187804 A281554 * A102840 A009353 A215583
KEYWORD
nonn
AUTHOR
Rémy Sigrist, Oct 06 2018
STATUS
approved