OFFSET
1,1
LINKS
Michel Marcus, Table of n, a(n) for n = 1..10000
EXAMPLE
PROG
(PARI) row(n) = my(v=List()); fordiv(2*n, k, if(k<2, next); if(k==n, break); my(s=(2*n/k-4+2*k)/(k-1)); if(denominator(s)==1, listput(v, s))); Vecrev(v); \\ A177028
lista(nn) = {for (n=3, nn, my(r = row(n)); if (#r == 2, print1(r[1], ", ")); ); }
CROSSREFS
KEYWORD
nonn
AUTHOR
Michel Marcus, Mar 29 2021
STATUS
approved