274480

Appears in sequences

• Binomial transform of generalized Lucas numbers S(n) = S(n-1) + S(n-2) + S(n-3), S(0)=3, S(1)=1, S(2)=3.at n=12A073313
• Number of base-2 palindromic primes (A016041) in range [2^2n,2^(2n+1)].at n=21A095741
• Number of palindromic primes in base 2 with exactly n binary digits.at n=44A117773
• A triangle related to the a(n) formulas of the rows of the ED3 array A167572.at n=31A167580
• The fourth left hand column of triangle A167580.at n=4A168305
• Expansion of Product_{k>=1} ((1 + k*x^k) / (1 - x^k))^k.at n=13A268502