The congruence properties of Romik's sequence of Taylor coefficients of Jacobi's theta function $\hat{I}{¸}_3$

Christian Krattenthaler, Thomas W. Müller

In [Ramanujan J. 52 (2020), 275-290], Romik considered the Taylor expansion of Jacobi's theta function $\hat{I}{¸}_3(q)$ at $q=e^{-\ddot{I}€}$ and encoded it in an integer sequence $(d(n))_{n\ge0…