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A112048 Bisection of A112046. 4
2, 3, 2, 3, 2, 5, 2, 3, 2, 3, 2, 7, 2, 3, 2, 3, 2, 5, 2, 3, 2, 3, 2, 5, 2, 3, 2, 3, 2, 11, 2, 3, 2, 3, 2, 5, 2, 3, 2, 3, 2, 13, 2, 3, 2, 3, 2, 5, 2, 3, 2, 3, 2, 5, 2, 3, 2, 3, 2, 7, 2, 3, 2, 3, 2, 5, 2, 3, 2, 3, 2, 17, 2, 3, 2, 3, 2, 5, 2, 3, 2, 3, 2, 5, 2, 3, 2, 3, 2, 19, 2, 3, 2, 3, 2, 5, 2, 3, 2, 3, 2 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

FORMULA

a(n) = A112046(2n).

MATHEMATICA

a112046[n_]:=Block[{i=1}, While[JacobiSymbol[i, 2n + 1]==1, i++]; i]; Table[a112046[2n] , {n, 101}] (* Indranil Ghosh, May 24 2017 *)

PROG

(Python)

from sympy import jacobi_symbol as J

def a112046(n):

    i=1

    while True:

        if J(i, 2*n + 1)!=1: return i

        else: i+=1

def a(n): return a112046(2*n)

print [a(n) for n in range(1, 102)] # Indranil Ghosh, May 24 2017

CROSSREFS

Cf. A112047, A112053.

Sequence in context: A053669 A342309 A112047 * A060395 A016026 A086757

Adjacent sequences:  A112045 A112046 A112047 * A112049 A112050 A112051

KEYWORD

nonn

AUTHOR

Antti Karttunen, Aug 27 2005

STATUS

approved

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Last modified April 14 01:17 EDT 2021. Contains 342941 sequences. (Running on oeis4.)