Sequences

Number of Class A multi-edge stars with n edges and 2 odd unlabeled roots.

Class B multi-edge stars with n edges and 2 odd unlabeled roots.

Multi-edge stars with n edges and 2 odd unlabeled roots.

Class A multi-edge stars with n edges and 2 odd labeled roots.

Class B multi-edge stars with n edges and 2 odd labeled roots.

Multi-edge stars with n edges and 2 odd labeled roots.

High-temperature spin-1/2 Ising model series for second derivative of susceptibility with respect to magnetic field for hyper-body-centered-cubic lattice.

Number of points of L1 norm 2n in Hamming code version of E_8 lattice.

Number of points of L1 norm 2n in root system version of E_8 lattice.

a(n) = binomial(2*n, n)^2 / (1-2*n).

Number of segments used to represent n on a 7-segment calculator display; version where '6', '7' and '9' use 6, 4 and 6 segments, respectively.

Number of unrooted quartic trees with n (unlabeled) nodes and possessing a centroid; number of n-carbon alkanes C(n)H(2n +2) with a centroid ignoring stereoisomers.

Number of unrooted quartic trees with 2n (unlabeled) nodes and possessing a bicentroid; number of 2n-carbon alkanes C(2n)H(4n+2) with a bicentroid, ignoring stereoisomers.

Number of directed site animals with no loops enumerated by area (or number of sites).

Squares mod 11.

Squares mod 13.

Squares mod 14.

Squares mod 15.

Squares mod 17.

Squares mod 18.

Squares mod 19.

Squares mod 20.

Squares mod 21.

Squares mod 22.

Squares mod 23.

Squares mod 24.

Squares mod 25.

Squares mod 26.

Squares mod 27.

Squares mod 28.

Squares mod 29.

Squares mod 31.

Squares mod 32.

Squares mod 33.

Squares mod 34.

Squares mod 35.

Squares mod 36.

Squares mod 37.

Squares mod 38.

Squares mod 39.

Squares mod 40.

Squares mod 41.

Squares mod 42.

Squares mod 43.

Squares mod 44.

Squares mod 45.

Squares mod 46.

Squares mod 47.

Squares mod 48.

Squares mod 49.