OFFSET
1,2
COMMENTS
Row sums = A002064, the Cullen numbers: (1, 3, 9, 25, 65, 161, 385, ...).
Left border = A000325, (2^n - n) starting (1, 2, 5, 12, 27, 58, ...).
Equals A129689 with first column removed. - Georg Fischer, Jul 25 2023
EXAMPLE
First few rows of the triangle:
1;
2, 1;
5, 3, 1;
12, 8, 4, 1;
27, 20, 12, 5, 1;
58, 47, 32, 17, 6, 1;
121, 105, 79, 49, 23, 7, 1;
...
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, May 16 2007
EXTENSIONS
a(32) corrected and more terms from Georg Fischer, Jul 25 2023
STATUS
approved