OFFSET
1,2
LINKS
Marco Aldi and Samuel Bevins, L_oo-algebras and hypergraphs, arXiv:2212.13608 [math.CO], 2022. See page 9.
Meera G. Mainkar, Graphs and two step nilpotent Lie algebras, arXiv:1310.3414 [math.DG], 2013. See page 1.
Eric Weisstein's World of Mathematics, Ladder Graph.
EXAMPLE
Triangle begins:
k=0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
n=1: 1 2 2 1
n=2: 1 4 14 25 28 25 14 4 1
n=3: 1 6 32 89 204 357 437 437 357 204 89 32 6 1
n=4: 1 8 54 207 680 1650 3201 5310 6993 7508 6993 5310 3201 1650 680 207 54
...
PROG
CROSSREFS
KEYWORD
nonn,more,tabf
AUTHOR
Samuel J. Bevins, Feb 26 2023
STATUS
approved