  We search for gamma-ray emission from OJ287 in the energy range from 0.1-300
GeV during 2015-2023, in coincidence with an extensive observing campaign to
monitor the optical flux variability and polarization, as discussed in
arXiv:2311.02372. We present results for eight segments in the aforementioned
period, with each segment corresponding to an observing season. We report
non-zero gamma-ray flux (with $>10\sigma$ significance) for all the eight
segments. The photon and energy flux observed during this period is $\sim 5.2
\times 10^{-8} \rm{ph~cm^{-2}~s^{-1}}$ and $2.75 \times 10^{-5}
\rm{MeV~cm^{-2}~s^{-1}}$, respectively, while the SED can be fitted with a
power law with a slope of $2.12 \pm 0.02$. The observed luminosity is between
$10^{45}-10^{46}$ ergs/sec. Similar to previous works we find a hard cutoff in
the gamma-ray spectrum at around 20 GeV. We do not observe any correlations
between the peaks in the gamma ray light curves and corresponding optical light
cuves in $I$ and $R$ bands, as well as the X-ray light curves from SWIFT
between 0.3-10 keV.
