1256587domain: NPropertiesPrimalityPrimeyesAppears in sequencesScan decimal expansion of zeta(3) until all n-digit strings have been seen; a(n) is number of digits that must be scanned.at n=4A036906Engel expansion of Gamma(1/4)=3.62560990822190831193...at n=17A068479Prime numbersat n=96923