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We study the open string integrality invariants (LMOV invariants) for toricCalabi-Yau 3-folds with Aganagic-Vafa brane (AV-brane). In this paper, we focuson the case of the resolved conifold with one out AV-brane in any integerframing $\tau$, which is the large $N$ duality of the Chern-Simons theory for aframed unknot with integer framing $\tau$ in $S^3$. We compute the explicitformulas for the LMOV invariants in genus $g=0$ with any number of holes, andprove their integrality. For the higher genus LMOV invariants with one hole,they are reformulated into a generating function $g_{m}(q,a)$, and we provethat $g_{m}(q,a)\in(q^{1/2}-q^{-1/2})^{-2}\mathbb{Z}[(q^{1/2}-q^{-1/2})^2,a^{\pm 1/2}]$ for anyinteger $m\geq 1$. As a by product, we compute the reduced open stringpartition function of $\mathbb{C}^3$ with one AV-brane in framing $\tau$. Wefind that, for $\tau\leq -1$, this open string partition function is equivalentto the Hilbert-Poincar\'e series of the Cohomological Hall algebra of the$|\tau|$-loop quiver. It gives an open string GW/DT correspondence.

Integrality structures in topological strings I: framed unknot