diff --git a/cmd/partitions.go b/cmd/partitions.go
index 70a9d7b..eb5db5c 100644
--- a/cmd/partitions.go
+++ b/cmd/partitions.go
@@ -34,6 +34,8 @@ func p(n, k *big.Int) *big.Int {
 		return big.NewInt(1)
 	} else if k.Cmp(big.NewInt(0)) == 0 {
 		return big.NewInt(0)
+	} else if k.Cmp(n) == 1 {
+		return p(n, n)
 	}
 
 	newN := new(big.Int).Sub(n, k)