162360domain: NAppears in sequencesFibonacci sequence beginning 0, 24.at n=20A0223581/4 the number of arrangements of 5 nonzero numbers x(i) in -n..n with the sum of sign(x(i))*(|x(i)| mod x(i+1)) equal to zero.at n=12A189954Inverse Euler transform of the Riordan numbers, (A005043).at n=16A358451