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Task/Bernoulli-numbers/Python/bernoulli-numbers-1.py

@@ -0,0 +1,15 @@
+from fractions import Fraction as Fr
+
+def bernoulli(n):
+    A = [0] * (n+1)
+    for m in range(n+1):
+        A[m] = Fr(1, m+1)
+        for j in range(m, 0, -1):
+          A[j-1] = j*(A[j-1] - A[j])
+    return A[0] # (which is Bn)
+
+bn = [(i, bernoulli(i)) for i in range(61)]
+bn = [(i, b) for i,b in bn if b]
+width = max(len(str(b.numerator)) for i,b in bn)
+for i,b in bn:
+    print('B(%2i) = %*i/%i' % (i, width, b.numerator, b.denominator))

Task/Bernoulli-numbers/Python/bernoulli-numbers-2.py

@@ -0,0 +1,14 @@
+def bernoulli2():
+    A, m = [], 0
+    while True:
+        A.append(Fr(1, m+1))
+        for j in range(m, 0, -1):
+          A[j-1] = j*(A[j-1] - A[j])
+        yield A[0] # (which is Bm)
+        m += 1
+
+bn2 = [ix for ix in zip(range(61), bernoulli2())]
+bn2 = [(i, b) for i,b in bn2 if b]
+width = max(len(str(b.numerator)) for i,b in bn2)
+for i,b in bn2:
+    print('B(%2i) = %*i/%i' % (i, width, b.numerator, b.denominator))