A Xmas tree with numbers
Pick any digit d in the tree: d is absent from rows immediately above or below d.
A term is always the absolute difference of the two nearest numbers under it.
Example
12 is the absolute difference between 65 and 53, and no 1 or 2 is visible in the rows sandwiching 12.
2
1 3
4 5 2
7 3 8 6
2 9 12 4 10
58 56 65 53 57 67
_______________________
December 20st, 2023 update
Giorgos Kalogeropoulos was quick to beat my attempt with 7 rows (and 28 integers whose sum is 1464)
3
5 2
48 43 41
55 7 50 9
13 68 61 11 2
90 77 9 70 59 57
136 46 123 132 62 121 64
Bravo Giorgos, thank you and Merry Christmas to everyone!
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