24376

Appears in sequences

• Number of alternating sign n X n matrices that are symmetric about a diagonal.at n=7A005163
• A036917/8 (omitting leading term of A036917).at n=4A057718
• Ulam's spiral (WNW spoke).at n=39A143859
• Number of 2:3:sqrt(13) proportioned triangles on a (n+1)X(n+1) grid.at n=19A190112
• Molecular topological indices of the sunlet graphs.at n=21A192846
• Number of partitions p of n such that (maximal multiplicity of the parts of p) > (number of distinct parts of p).at n=42A240309
• Number of (n+1) X (1+1) arrays of permutations of 0..n*2+1 with each element having directed index change 0,0 0,1 1,0 -2,-1 or -1,-2.at n=13A264166
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 485", based on the 5-celled von Neumann neighborhood.at n=31A272504
• Median of the primes p with 2^(n-1) < p < 2^n.at n=12A309359
• Number of partitions of n with up to four distinct kinds of 1.at n=34A320691
• Expansion of 1/(1 - x/(1 - 9*x^3)^(1/3)).at n=16A371458
• a(n) = Sum_{k=0..floor(n/3)} (n-2*k+1) * binomial(n-2*k,k)^2.at n=13A375565