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Task/Bernoulli-numbers/Go/bernoulli-numbers.go

@@ -0,0 +1,33 @@
+package main
+
+import (
+    "fmt"
+    "math/big"
+    "strings"
+)
+
+func b(n int) *big.Rat {
+    var f big.Rat
+    a := make([]big.Rat, n+1)
+    for m := range a {
+        a[m].SetFrac64(1, int64(m+1))
+        for j := m; j >= 1; j-- {
+            d := &a[j-1]
+            d.Mul(f.SetInt64(int64(j)), d.Sub(d, &a[j]))
+        }
+    }
+    return f.Set(&a[0])
+}
+
+func align(b *big.Rat, w int) string {
+    s := b.String()
+    return strings.Repeat(" ", w-strings.Index(s, "/")) + s
+}
+
+func main() {
+    for n := 0; n <= 60; n++ {
+        if b := b(n); b.Num().BitLen() > 0 {
+            fmt.Printf("B(%2d) =%s\n", n, align(b, 45))
+        }
+    }
+}