172810

Appears in sequences

• Central factorial numbers: 2nd subdiagonal of A008956.at n=3A001825
• Triangle of central factorial numbers |4^k t(2n+1,2n+1-2k)| read by rows (n>=0, k=0..n).at n=18A008956
• Number of chiral pairs of necklaces with n beads and two colors (color complements being equivalent); i.e., turning the necklace over neither leaves it unchanged nor simply swaps the colors.at n=24A059053
• Triangle T(n,k) defined by the generating function cosh(sqrt(y)*arcsin(x)) + sqrt(y)*sinh(sqrt(y)*arcsin(x)) - 1 = Sum_{n>=1} Sum_{k=1..n} T(n,k)*y^k *x^n/n!.at n=32A091885
• Triangle T(n,k) defined by the generating function: exp(y*arcsin(x))-1 = Sum_{n>=1} (Sum_{k=1..n} T(n,k)*y^k)*x^n/n!.at n=59A121408
• Table of the number of (n,k)-Riordan complexes, read by rows.at n=17A160563
• Third column (negated) of triangle in A182971.at n=8A184878
• a(n) = n-th pi-based antiderivative of 9.at n=9A259170
• Exponential Riordan array (1, arcsin(x)).at n=71A385343