49121

Properties

Appears in sequences

• Expansion of 1/((1-3x)(1-4x)(1-6x)(1-10x)).at n=4A028035
• a(n) = 3*(2^n-1) - 2*n.at n=14A050488
• Expansion of (1-x)^(-1)/(1 - x - 2*x^2 + 2*x^3).at n=26A077866
• Lesser of twin balanced primes (A090403).at n=22A096694
• Balanced primes of order nine.at n=29A096701
• A Somos 9-type recurrence: a(n) = (3*a(n-1)*a(n-8) - a(n-4)*a(n-5))/a(n-9), with a(0)=...=a(8)=1.at n=18A122055
• Primes p1 such that p1^3+p2^2=pp are average of twin primes. p1 and p2 consecutive primes, p1 < p2.at n=30A138735
• Lesser of twin primes p1 such that p1^3 + p2^2 are average of twin primes. p1 and p2 twin primes, p1 < p2.at n=7A139778
• a(n) = 6*2^n - 2*n - 5.at n=13A142964
• a(0)=2; for n > 0, a(n) = (n+2)*a(n-1) + 1.at n=6A185109
• Primes of the form 10n^3-9.at n=4A201039
• a(n) = 192*2^n - 31 (n>=1).at n=7A304385
• Lesser of twin self primes, i.e., smaller member of the pair of self primes differing by 2.at n=6A380713
• Prime numbersat n=5049