Idoneal numbers: Difference between revisions

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 ;* [[oeis:A000926|OEIS:A000926 - Euler's "numerus idoneus" (or "numeri idonei", or idoneal, or suitable, or convenient numbers)]]
+=={{header|python}}==
+{{trans|Raku}}
+<syntaxheader lang="python">''' Rosetta code task: rosettacode.org/wiki/Idoneal_numbers '''
+def is_idoneal(num):
+    ''' Return true if num is an idoneal number '''
+    for a in range(1, num):
+        for b in range(a + 1, num):
+            if a * b + a + b > num:
+                break
+            for c in range(b + 1, num):
+                sum3 = a * b + b * c + a * c
+                if sum3 == num:
+                    return False
+                if sum3 > num:
+                    break
+    return True
+row = 0
+for n in range(1, 2000):
+    if is_idoneal(n):
+        row += 1
+        print(f'{n:5}', end='\n' if row % 13 == 0 else '')
+</syntaxheader>{{out}}
+<pre>
+2    3    4    5    6    7    8    9   10   12   13   15
+18   21   22   24   25   28   30   33   37   40   42   45
+57   58   60   70   72   78   85   88   93  102  105  112
+130  133  165  168  177  190  210  232  240  253  273  280
+330  345  357  385  408  462  520  760  840 1320 1365 1848
+</pre>