631632domain: NAppears in sequencesSmallest k such that (k+i)*prime(n)# - 1 is prime for i = 0, 1, 2, 3, 4 with prime(n)# = A002110(n) the n-th primorial, n>1.at n=24A277691Number of set partitions of [n] such that block sizes are either 1 or 4.at n=14A351932