-697

Appears in sequences

• Expansion of Product_{m>=1} (1+q^m)^(-17).at n=3A022612
• a(n) = prime(n)*(prime(n + 1) + 1) - (n^3 + sum of digits of n^3).at n=13A123139
• Irregular array read by rows of numerators in which row n has one numerator from each irreducible cycle of n rational numbers under iteration by the 3x+1 function. (See Comments for selection and order of numerators.)at n=43A226605
• Coefficients in the expansion of 1/([r] + [2r]x + [3r]x^2 + ...); [ ] = floor, r = sqrt(6)/2.at n=54A279594
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of exp(-Sum_{j>0} sigma_k(j)*x^j/j) in powers of x.at n=31A294947
• a(n) = t(n)*a(n-1) + a(n-2) for n>1 where t(n) is the Prouhet-Thue-Morse sequence A106400 with a(0)=0 and a(1)=1.at n=46A348112
• a(n) = t(n)*a(n-1) + a(n-2) for n>1 where t(n) is the Prouhet-Thue-Morse sequence A106400 with a(0)=0 and a(1)=1.at n=52A348112