510683domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of partitions of n into parts 1/2, 3/4, 7/8, 15/16, etc.at n=23A002843Number of length 4+3 0..n arrays with some disjoint pairs in every consecutive four terms having the same sum.at n=27A247536Prime numbersat n=42344