113548domain: NAppears in sequencesNumbers k such that 3^k + 26 is prime.at n=40A219044a(n) = n^4 + 14*n^3 + 63*n^2 + 98*n + 28.at n=15A346376Number of subsets of {1,2,...,n} such that no two elements differ by 3, 4, or 5.at n=30A375984