diff --git a/README.md b/README.md
index d60d30d..30f8a64 100644
--- a/README.md
+++ b/README.md
@@ -244,14 +244,14 @@ The quad pental curve; ((3x2)x5x5x5x5)
 - V750Poofy
 - V0x000EA6ˣᴸ (3750 bit)
 
-The quad konrad curve; (3x7x13x19x29)x37x43x53x61
+The quad konrad curve; (3x7x13x19x29)x37x43x53x61 = [A031215](https://oeis.org/A031215) Even-indexed primes: a(n) = prime(2n). 
 
 - V021Koeye (unicode codepoint)
 - V273Korcet
 - V0x001443ˣᴸ (5187 bit)
 - V0x024B97ˣᴸ (150423 bit)
 
-The quad rudra curve; (3x5x11x13x19)x23x31x37x43
+The quad rudra curve; (3x5x11x13x19)x23x31x41x53 = [A023209](https://oeis.org/A023209) Primes p such that 3p + 4 is also prime. 
 
 - V015Reptet
 - V165Roket