100748domain: NAppears in sequencesNumbers k such that 123*2^k+1 is prime.at n=26A032411Sums of squares of primitive roots of primes.at n=24A089453Number of representations of 1 as a sum of numbers d*k with d in {-1,1} and k in {1,2,...,n}, where the sum of the numbers k is 2n + 1.at n=22A236430