OFFSET
1,2
COMMENTS
EXAMPLE
630 is in the sequence because it is a triangular number (630 = 35*36/2) and 630 = 105*6, with 105 = 14*15/2, triangular number, and 6 = 2*3, oblong number.
PROG
(PARI) {i=0; j=1; print1(0, ", "); while(i<=10^6, k=1; p=2; c=0; while(k<i&&c==0, if(i/k==i\k&&issquare(4*(i/k)+1)&&k>0, c=k); if(c>0, print1(i, ", ")); k+=p; p+=1); i+=j; j+=1)}
CROSSREFS
KEYWORD
nonn
AUTHOR
Antonio Roldán, Jan 07 2015
STATUS
approved