login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
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 (list; graph; refs; listen; history; text; internal format)
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

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 7 08:50 EDT 2020. Contains 333300 sequences. (Running on oeis4.)