50169domain: NAppears in sequencesNumbers k such that 131*2^k+1 is prime.at n=33A03241524 'Reverse and Add' steps are needed to reach a palindrome.at n=10A065318a(n) = 49*n^2 - 7.at n=31A158484Number of partitions of n into 9 parts such that every i-th smallest part (counted with multiplicity) is different from i.at n=25A244245