1344559domain: NPropertiesPrimalityPrimeyesAppears in sequencesTwice the total area of all nonnegative lattice paths from (0,0) to (n,0) where the allowed steps at (x,y) are (h,v) with h in {1..max(1,y)} and v in {-1,0,1}.at n=12A337863Prime numbersat n=103181