196633domain: NAppears in sequencesOdd numbers m such that for all 2^k < m the numbers m + 2^k, m - 2^k, m*2^k + 1, and m*2^k - 1 are composite, with k >= 1.at n=24A256163Number of maximal subsets of {1..n} containing no sums of distinct elements.at n=39A326498