-1693

Appears in sequences

• The self-COMPOSE transform of A107097 and also the partial sums of A107097: g.f. A(x) = G(G(x)) = G(x)/(1-x) where G(x) is the g.f. of A107097.at n=9A107098
• 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=13A117081
• Inverse binomial transform of double factorial n!! = A006882(n).at n=9A262020
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 205", based on the 5-celled von Neumann neighborhood.at n=23A270732