Hi monks,
I have prepared this golf.
My first BASIC program using loops takes a number or rows and then, write this (for 5 rows, for example)
  1
  2  3
  4  5  6
  7  8  9 10
 11 12 13 14 15

[download]
Note that all the numbers must be aligned, there is at least one space between numbers, and one space at the beggining of the row
Update!Between the last two numbers there must be exactly one space

The output for 15 rows would be
   1
   2   3
   4   5   6
   7   8   9  10
  11  12  13  14  15
  16  17  18  19  20  21
  22  23  24  25  26  27  28
  29  30  31  32  33  34  35  36
  37  38  39  40  41  42  43  44  45
  46  47  48  49  50  51  52  53  54  55
  56  57  58  59  60  61  62  63  64  65  66
  67  68  69  70  71  72  73  74  75  76  77  78
  79  80  81  82  83  84  85  86  87  88  89  90  91
  92  93  94  95  96  97  98  99 100 101 102 103 104 105
 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120

[download]

The game consists on code it in Perl, after 15 years :-)
I assume that the number of rows is on $a.(for example I don't count the 6 characters $a=15; )
My fourth attempt is 75 characters, but I think it could be done better.
$n=length($a*($a+1)/2)+1;map{map{printf"%${n}d",++$k}1..$_;print"\n"}1
+..$a;

[download]
Hope this fun
Hopes

In reply to (golf) Triangle of numbers by hopes

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