OFFSET
1,3
LINKS
Quynh Nguyen, Jean Pedersen, and Hien T. Vu, New Integer Sequences Arising From 3-Period Folding Numbers, JIS vol 19 (2016) #16.3.1 table 1.
FORMULA
T(n,m) = (2^(n*m)-1)/(2^m-1) for n>1.
EXAMPLE
The array starts in rows n>=1 and columns m>=1 as
1 1 1 1 1
3 5 9 17 33
7 21 73 273 1057
15 85 585 4369 33825
31 341 4681 69905 1082401
CROSSREFS
KEYWORD
AUTHOR
R. J. Mathar, Feb 27 2023
STATUS
approved