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A216245
Sum of 1/a(n)^2 approaches sqrt(3) with partial sums staying below.
1
1, 2, 2, 3, 3, 11, 26, 109, 1227, 51420, 8988362, 32710914040, 7771377209846338, 490053183865066320353971, 273597849253997654907692972401071423, 337927017741012348216065570192997747462584982737948593
OFFSET
1,2
PROG
(PARI) default(realprecision, 10^5);
lista(n) = {x = sqrt(3); for (i=1, n, a = ceil(1/sqrt(x)); print1(a, ", "); x -= 1/a^2; ); }
CROSSREFS
Cf. A179332.
Sequence in context: A094117 A097365 A156906 * A180000 A053094 A309283
KEYWORD
nonn
AUTHOR
Michel Marcus, Mar 15 2013
STATUS
approved