41664

Appears in sequences

• Sum of the first n even squares: a(n) = 2*n*(n+1)*(2*n+1)/3.at n=31A002492
• Binomial coefficient C(8n,n-5).at n=3A004386
• Binomial coefficients C(n,61).at n=3A017725
• Binomial coefficients C(64,n).at n=3A017780
• a(n) = 2^n*(2^n - 1)*(2^n - 2)/6.at n=6A026740
• Weight distribution of (64, 2^52, 6) Preparata code.at n=3A028239
• a(n) = (prime(n)-3)*(prime(n)-5)*(prime(n)-7)/48.at n=30A030003
• Theta series of lattice D3 tensor D3* (dimension 9, det. 262144, min. norm 6).at n=21A033694
• Number of partitions satisfying cn(0,5) <= cn(1,5) and cn(0,5) <= cn(4,5).at n=43A039837
• Maximal degree of an irreducible representation of the group SL(n,2) (the group of nonsingular n X n matrices over GF(2) ).at n=5A062733
• 53 'Reverse and Add' steps are needed to reach a palindrome.at n=25A065320
• Numbers k such that phi(k) = sigma(k+1) - sigma(k-1).at n=18A066155
• Numbers k such that sigma(prime(k) - 1) == 0 (mod k).at n=33A067758
• Triangle read by rows: T(n,k) = binomial(n^2, k), 0 <= k <= n.at n=39A090642
• Number of base-2 strong pseudoprimes (A001262) less than 2^n.at n=41A108797
• Triangle, read by rows, where T(n,k) = C(C(n+2,3) - C(k+2,3), n-k) for n >= k >= 0.at n=32A126445
• Matrix inverse of triangle A022166.at n=23A135950
• Triangle, read by rows, where T(n,k) = C(2^k,n-k) for n>=k>=0.at n=51A136501
• A triangular sequence of coefficients from a three level exponential expansion function: f(x,t) = log(1 + t)*(1 - t)*exp(x*(t - t^2)).at n=32A137455
• Tetrahedral numbers n*(n+1)*(n+2)/6 with n, n+1 and n+2 nonprime.at n=17A152622