Data commit

Task/Magic-constant/Python/magic-constant.py

@@ -0,0 +1,21 @@
+#!/usr/bin/python
+
+def a(n):
+    n += 2
+    return n*(n**2 + 1)/2
+
+def inv_a(x):
+    k = 0
+    while k*(k**2+1)/2+2 < x:
+        k+=1
+    return k
+
+
+if __name__ == '__main__':
+    print("The first 20 magic constants are:");
+    for n in range(1, 20):
+        print(int(a(n)), end = " ");
+    print("\nThe 1,000th magic constant is:",int(a(1000)));
+
+    for e in range(1, 20):
+        print(f'10^{e}: {inv_a(10**e)}');