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, 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.

Links

Table of n, a(n) for n=1..27.

Crossrefs

Cf. A319920.

Sequence in context: A151814 A187804 A281554 * A102840 A009353 A215583

Adjacent sequences: A320101 A320102 A320103 * A320105 A320106 A320107

Keyword

nonn

Author

Rémy Sigrist, Oct 06 2018

Status

approved