16777219

Appears in sequences

• a(n) = 2^n + 3.at n=24A062709
• a(n) is the least semiprime >= n^n.at n=7A089542
• Semiprime nearest to 2^n. (In case of a tie, choose the smaller).at n=24A117405
• a(n) = n_{2^n}.at n=22A122624
• a(n) = 3*a(n-1) - 3*a(n-2) + 2*a(n-3), with a(0) = 4, a(1) = 2, a(2) = 1.at n=24A133455
• Powers of 2 with 3 alternatingly added and subtracted.at n=24A140657
• Inverse binomial transform of A070366.at n=25A146321
• a(n)= -3a(n-1)-3a(n-2)-2a(n-3), n>3. a(0)=4, a(1)=4, a(2)=-5, a(3)=4.at n=25A158935
• a(n) = smallest number that leads to a new cycle under the base-8 Kaprekar map of A165090.at n=18A165107
• a(n) = 4^n + 3.at n=12A253208
• a(n) = n + 1 when n <= 3, otherwise a(n) = 2^(n-2) + 3; also iterates of A005187 starting from a(1) = 2.at n=25A256994
• Number of minimal dominating sets in the n-book graph.at n=23A347512
• Records in A385485.at n=16A385487