-613

Appears in sequences

• a(n) = bin_prime_sum(fibonacci(A001651[n])), where fibonacci(A001651[n]) is A014437[n].at n=54A059878
• Determinant of rank n matrix of 1..n^2 filled successively along antidiagonals.at n=34A069480
• a(n) = A000217(n) - A048702(n).at n=67A075113
• Partial sums of A073579.at n=51A077039
• Expansion of (1-x)/(1+2*x+x^2-2*x^3).at n=11A078063
• a(n) = 36*n^2 - 810*n + 2753, producing the conjectured record number of 45 primes in a contiguous range of n for quadratic polynomials, i.e., abs(a(n)) is prime for 0 <= n < 44.at n=17A117081
• Expansion of x*(1 - 3*x + x^2) / (1 - x - 2*x^2 + x^3).at n=13A122161
• Expansion of o.g.f. (1-x^2)/(1-x+x^4).at n=40A193884
• a(n) = Sum_{k=1..n} (-k)^(floor(n/k) - 1).at n=19A345037
• Triangle of numerators for rational convergents to Taylor series of 1/Gamma(x+1).at n=17A386675