OFFSET
1,3
LINKS
Lars Blomberg, Table of n, a(n) for n = 1..9870 (the first 140 rows)
EXAMPLE
Triangle begins:
0
0, 4
0, 2, 12
0, 0, 6, 16
0, 2, 4, 6, 24
0, 0, 2, 8, 10, 28
0, 2, 4, 2, 8, 6, 36
0, 0, 2, 0, 6, 8, 10, 40
0, 2, 4, 2, 12, 10, 8, 10, 56
0, 0, 2, 4, 2, 4, 10, 8, 10, 60
0, 2, 4, 2, 4, 2, 12, 6, 12, 6, 60
0, 0, 2, 0, 2, 4, 6, 12, 6, 8, 14, 64
0, 2, 4, 2, 4, 6, 8, 10, 16, 14, 12, 14, 72
0, 0, 2, 0, 2, 4, 2, 8, 14, 4, 6, 12, 18, 76
0, 2, 4, 2, 4, 2, 8, 2, 8, 10, 16, 10, 12, 10, 84
0, 0, 2, 0, 6, 4, 2, 4, 6, 16, 6, 4, 10, 12, 14, 88
0, 2, 4, 2, 4, 2, 8, 2, 16, 6, 16, 10, 16, 6, 24, 10, 104
0, 0, 2, 0, 2, 0, 2, 4, 6, 4, 10, 12, 10, 12, 10, 12, 14, 100
0, 2, 4, 2, 4, 2, 12, 6, 4, 6, 12, 10, 20, 6, 12, 14, 16, 10, 124
0, 0, 2, 0, 2, 0, 2, 0, 2, 4, 6, 12, 10, 12, 10, 12, 18, 12, 10, 112
-----
Denote by 'o' the point adjacent to the two equal sides, and by 'x' the other two.
n=4, k=3:
...x x... .o.. ..o. x... ...x
o... ...o ...x x... ...x x...
...x x... x... ...x .o.. ..o.
So T(4,3)=6.
-----
n=4,k=4:
o... ...o .x.. ..x. o... ...o ..x. .x..
...x x... .... .... .... .... ...x x...
.... .... ...x x... ...x x... .... ....
.x.. ..x. o... ...o ..x. .x.. o... ...o
-
...x x... x... ...x o..x x..o x... ...x
.o.. ..o. .... .... .... .... .... ....
.... .... .o.. ..o. .... .... .... ....
x... ...x ...x x... x... ...x o..x x..o
So T(4,4)=16.
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Lars Blomberg, Feb 16 2017
STATUS
approved