51744

Appears in sequences

• (7*n^3+4*n^2+4*n)*binomial(2*n,n)/30.at n=6A036973
• Molien series for 9-dimensional group of structure Z_2 X Z_2 and order 4, corresponding to complete weight enumerators of Hermitian self-dual GF(3)-linear codes over GF(9).at n=13A092091
• Values of n*d(k)*sopf(k) associated with A134382.at n=27A134386
• Sum of staircase twin primes according to the rule: top * bottom - next top.at n=15A135285
• Number of one-sided prudent walks from (0,0) to (n,n), with 3+n east steps, 3 west steps and n north steps.at n=5A189769
• Numbers with prime factorization pqr^2s^5.at n=21A190293
• Number of one-sided prudent walks from (0,0) to (n,n), with floor(n/2)+n east steps, floor(n/2) west steps and n north steps.at n=6A190425
• Number of arrays of 4 0..n integers with no sum of consecutive elements equal to a disjoint adjacent sum of an equal number of elements.at n=14A215191
• Number of 5-cycles in the n-tetrahedral graph.at n=7A289793
• a(n) = Sum_{k=0..floor(n/3)} binomial(2*n-4*k,n-3*k).at n=9A360151