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-rw-r--r--org-fc-algo-tn.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/org-fc-algo-tn.el b/org-fc-algo-tn.el
index 90b5419..b6a23b5 100644
--- a/org-fc-algo-tn.el
+++ b/org-fc-algo-tn.el
@@ -6,7 +6,7 @@
"The mathematical formula for the Nth triangular number."
(if (zerop n)
0
- (/ (* n (1+ n)) 4.0)))
+ (/ (* n (1+ n)) 2.0)))
(defun org-fc-algo-tn-next-parameters (ease box interval rating)
"Calculate the next parameters of a card, based on the review RATING.