OFFSET
1,1
EXAMPLE
Triangle begins:
....... 2
..... 2,3,5
... 2,3,5,7,11
. 2,3,5,7,11,13,17
MATHEMATICA
nn=10; Flatten[Table[Take[Prime[Range[2nn+1]], 2n+1], {n, 0, nn}]] (* Harvey P. Dale, Aug 16 2011 *)
CROSSREFS
KEYWORD
easy,nonn,tabf
AUTHOR
Omar E. Pol, Mar 14 2008, corrected Mar 15 2008
STATUS
approved