OFFSET
1,2
COMMENTS
LINKS
Harvey P. Dale, Table of n, a(n) for n = 1..5000
EXAMPLE
Triangle begins:
1;
3, 6;
7, 14, 28;
15, 30, 60, 120;
31, 62, 124, 248, 496;
63, 126, 252, 504, 1008, 2016;
127, 254, 508, 1016, 2032, 4064, 8128;
255, 510, 1020, 2040, 4080, 8160, 16320, 32640;
511, 1022, 2044, 4088, 8176, 16352, 32704, 65408, 130816;
...
MATHEMATICA
Table[(2^n-1)2^(k-1), {n, 10}, {k, n}]//Flatten (* Harvey P. Dale, Oct 10 2018 *)
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Omar E. Pol, Jan 12 2014
STATUS
approved