OFFSET
0,3
FORMULA
A016777 as the diagonal of an infinite lower triangular matrix with the rest zeros.
EXAMPLE
First few rows of the triangle are:
1;
0, 4;
0, 0, 7;
0, 0, 0, 10;
0, 0, 0, 0, 13;
...
MAPLE
ListTools[Flatten]([seq([seq(0, k=1..n), 3*n+1], n=0..12)]); # Georg Fischer, Oct 02 2021
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Jul 10 2007
EXTENSIONS
a(35) corrected and more terms from Georg Fischer, Oct 02 2021
STATUS
approved