37810

Appears in sequences

• a(n) = t(n)_t(n) where t() = triangular numbers A000217.at n=18A122628
• Number of 4-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero and avoiding the patterns z z+1 z+2 and z z-1 z-2.at n=29A209116
• Composite squarefree numbers n such that p(i)-8 divides n+8, where p(i) are the prime factors of n.at n=23A225708
• Coefficients of the nonnegative powers of rho(11) = 2*cos(Pi/11) when written in the power basis of the degree 5 number field Q(rho(11)). Coefficients of the third power.at n=17A231185
• E.g.f.: Series_Reversion( 3*x - 2*x*exp(x) ).at n=4A259063
• a(n) = n*(2*n - 3 - (-1)^n)*(5*n - 2 + (-1)^n)/16.at n=39A308025
• a(n) = Sum_{d|n} d*binomial(d+2,3).at n=20A321598
• a(n) = 32*n^2 - 40*n + 10.at n=34A343578
• Expansion of (1 - 2*x)/(1 - 9*x + 28*x^2 - 35*x^3 + 15*x^4 - x^5).at n=7A370391