-1013

Appears in sequences

• Numerator of the coefficient [x^(2n+1)] of tanh(cosec(x)-coth(x)).at n=2A013544
• An accelerator sequence for Catalan's constant.at n=11A094650
• Triangle built from partial sums of Catalan numbers multiplied by powers of nonpositive numbers.at n=51A112707
• Partial sums of Catalan numbers A000108 multiplied by powers of -6.at n=3A113265
• a(n) = -n^2 + 9*n + 23.at n=37A126719
• Triangle read by rows: T(n,0) = n+1, T(n,k) = 2*T(n-1,k) - T(n-1,k-1), T(n,k) = 0 if k > n and if k < 0.at n=46A159856
• Numerator of Hermite(n, 1/26).at n=3A160069
• Riordan array T((1-x)^(-2) | 2x-1) read by rows.at n=36A181690
• First differences of A060819(n-4)*A060819(n).at n=34A185688
• G.f.: Product_{k>=1} 1/(1+x^k)^k.at n=33A255528
• G.f.: Product_{m>0} (1 - x^m + 2!*x^(2*m) - 3!*x^(3*m) + 4!*x^(4*m)).at n=22A293256
• a(n) = A294898(A122111(n)).at n=68A323167
• a(n) = -n^2 + 21*n - 1.at n=43A332884
• Triangle read by rows, application of the transformation A337966 to Euler's triangle A173018. T(n, k) for 0 <= k <= n.at n=56A337967
• Triangle read by rows, application of the transformation A337966 to Euler's triangle A173018. T(n, k) for 0 <= k <= n.at n=63A337967
• Dirichlet convolution of A000027 (identity function) with A349452 (Dirichlet inverse of A011782, 2^(n-1)).at n=10A349569
• a(n) = Sum_{d|n} (-1)^(d-1) * d^(n/d-1).at n=21A359812