OFFSET
1,2
COMMENTS
EXAMPLE
First few rows of the triangle:
1;
4, 2;
8, 5, 3;
13, 9, 7, 4;
19, 14, 12, 9, 5;
26, 20, 18, 15, 11, 6;
34, 27, 25, 22, 18, 13, 7;
...
PROG
(PARI) tabl(nn) = {m131818 = matrix(nn, nn, n, k, if (k==1, n, if (k <= n, k, 0))); m000012 = matrix(nn, nn, n, k, (k<=n)); m131819 = m131818 * m000012; for (n = 1, nn, for (k = 1, n, print1(m131819[n, k], ", "); ); ); } \\ Michel Marcus, Feb 12 2014
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Gary W. Adamson, Jul 18 2007
EXTENSIONS
More terms from Michel Marcus, Feb 12 2014
STATUS
approved