OFFSET
0,1
LINKS
PROG
(PARI) {a(n) = my(k=2); while(ellanalyticrank(ellinit([0, k+1, 0, k, 0]))[1]<>n, k++); k}
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Seiichi Manyama, Jul 15 2019
STATUS
approved