OFFSET
0,4
EXAMPLE
Triangle starts:
[0] 1;
[1] 1, 1;
[2] 2, 1, 2;
[3] 3, 1, 1, 3;
[4] 12, 3, 2, 3, 12;
[5] 10, 2, 1, 1, 2, 10;
[6] 60, 10, 4, 3, 4, 10, 60;
[7] 105, 15, 5, 3, 3, 5, 15, 105;
[8] 280, 35, 10, 5, 4, 5, 10, 35, 280;
[9] 252, 28, 7, 3, 2, 2, 3, 7, 28, 252;
MAPLE
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Peter Luschny, Nov 13 2021
STATUS
approved