-949

Appears in sequences

• a(n) = 2^phi(n) - Sum_{j=0..n} binomial(phi(n), phi(j)).at n=21A073318
• Antidiagonal sums of triangle A098495.at n=12A098496
• a(n) = -n^2 + 9*n + 23.at n=36A126719
• Expansion of (1/x) * Series_Reversion( x / ((1-x)^2 * (1+x)^3) ).at n=8A370107
• Expansion of the series e(q)*e(-q) (even coefficients only), where the series e(q) is Morier-Genoud and Ovsienko's q-analog of the real number e = exp(1).at n=12A392022