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  1. import math,fractions
  2. f=math.factorial
  3.  
  4. def memoize(f):
  5.  memo = {}
  6.  def helper(x):
  7.   if x not in memo:
  8.    memo[x] = f(x)
  9.   return memo[x]
  10.  return helper
  11.  
  12. @memoize
  13. def B(m):
  14.  return~-m*m%2or 1+sum(B(k)*f(m)/f(k)/f(m-k)/fractions.Fraction(k+~m)for k in range(m))
  15.  
  16. for m in range(61):
  17.  print(B(m))
Success #stdin #stdout 0.19s 9936KB
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stdin
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Standard input is empty
stdout
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1
1/2
1/6
0
-1/30
0
1/42
0
-1/30
0
5/66
0
-691/2730
0
7/6
0
-3617/510
0
43867/798
0
-174611/330
0
854513/138
0
-236364091/2730
0
8553103/6
0
-23749461029/870
0
8615841276005/14322
0
-7709321041217/510
0
2577687858367/6
0
-26315271553053477373/1919190
0
2929993913841559/6
0
-261082718496449122051/13530
0
1520097643918070802691/1806
0
-27833269579301024235023/690
0
596451111593912163277961/282
0
-5609403368997817686249127547/46410
0
495057205241079648212477525/66
0
-801165718135489957347924991853/1590
0
29149963634884862421418123812691/798
0
-2479392929313226753685415739663229/870
0
84483613348880041862046775994036021/354
0
-1215233140483755572040304994079820246041491/56786730
https://ideone.com/oc6yHW
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
secret

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