22199

Appears in sequences

• a(n) = prime(n)*prime(n+1) - prime(n) - prime(n+1).at n=34A037165
• Numerators of continued fraction convergents to sqrt(453).at n=5A041862
• a(n) = prime(n)^2 - 2.at n=34A049001
• Subset of A037165 (p(n)*p(n+1)-p(n)-p(n+1)) for twin primes.at n=11A137367
• Numerators of rational valued sequence f whose Dirichlet convolution with itself yields A000203 (sigma, the sum of divisors).at n=63A317831
• Numerators of rational valued sequence whose Dirichlet convolution with itself yields A005187.at n=63A317927
• Expansion of Product_{k>0} (1 + (2*k-1)*x^(2*k-1))/(1 - 2*k*x^(2*k)).at n=18A319859
• Array read by downward antidiagonals: A(n,k) = Sum_{j=0..k+1} binomial(k+2, j+1)*A(n-1,j) with A(0,k) = 1, n >= 0, k >= 0.at n=26A370381
• Numbers of the form Product_{k=i..j} prime(k) - Sum_{k=i..j} prime(k) where i < j.at n=49A387946
• Numbers m such that Stern polynomial B(m,x) has no irreducible polynomial factors that themselves are Stern polynomials. The initial a(1) = 1 is included by convention.at n=29A389918