OFFSET
1,2
LINKS
Amiram Eldar, Table of n, a(n) for n = 1..10000
FORMULA
a(n) = (A094179(n) + 1)/4. - Amiram Eldar, Apr 01 2021
MATHEMATICA
Select[Range[150], AllTrue[FactorInteger[4*# - 1][[;; , 1]], Mod[#1, 4] == 3 &] &] (* Amiram Eldar, Apr 01 2021 *)
PROG
(PARI) {for(n=1, 140, fac=factor(4*n-1); v=vector(matsize(fac)[1], j, fac[j, 1])%4; if(vecmin(v)==3, print1(n, ", ")))} \\ Klaus Brockhaus, May 08 2004
CROSSREFS
KEYWORD
nonn
AUTHOR
Lekraj Beedassy, May 06 2004
EXTENSIONS
More terms from Klaus Brockhaus, May 08 2004
STATUS
approved