OFFSET
1,3
COMMENTS
EXAMPLE
For row n = 5 of triangle we have:
-------------------------------------
Column Zone The 5th Total sum
k shell of parts
-------------------------------------
8 <> 7 (5) 15
7 <> 6 (3... 10
6 = 6 ...2) 7
5 = 5 (1) 5
4 = 4 (1) 4
3 = 3 (1) 3
2 = 2 (1) 2
1 = 1 (1) 1
.
Triangle begins:
1;
1,3;
1,2,5;
1,2,3,5,7,11;
1,2,3,4,5,7,10,15;
1,2,3,4,5,6,7,9,11,13,15,19,22,25,31;
1,2,3,4,5,6,7,8,9,10,11,13,15,18,20,25,28,32,39;
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Omar E. Pol, Apr 25 2012
STATUS
approved