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A309144
Rank of elliptic curve y^2 = x^3 + (n^2 + 6*n -3)*x^2 - 16*n*x.
5
0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 2, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0, 0, 0, 1, 0, 1, 1, 2, 0, 1, 0, 1, 0, 1, 2, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 2, 0, 1, 0, 0, 0, 2, 0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1
OFFSET
1,28
LINKS
Allan J. MacLeod, Knight's Problem
PROG
(PARI) {a(n) = ellanalyticrank(ellinit([0, n^2+6*n-3, 0, -16*n, 0]))[1]}
CROSSREFS
Cf. A102535.
Sequence in context: A160380 A122433 A056977 * A085425 A355685 A244250
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Jul 14 2019
STATUS
approved