OFFSET
1,2
COMMENTS
Numbers of form 6*m+1 are in even rows, numbers of form 6*m-1 are in odd rows.
EXAMPLE
Triangle begins: 1*1 5*1 7*5 7*1 5*5 7*7 11*1 13*5 11*7 13*11 13*1 11*5 13*7 11*11 13*13 17*1 19*15 17*7 19*11 17*13 19*17 19*1 17*5 19*7 17*11 19*13 17*17 19*19.. or 1(in even 0 row) 5 35(in odd 1 row) 7 25 49(in even 2 row) 11 65 77 143(in odd 3 row) 13 55 91 121 169(in even 4 row) 17 95 119 209 221 323(in odd 5 row) 19 65 133 187 247 289 361(in even 6 row)..
CROSSREFS
KEYWORD
nonn,tabl
AUTHOR
Juri-Stepan Gerasimov, Feb 26 2010, Mar 06 2010
STATUS
approved