54280

Appears in sequences

• Expansion of tanh(tanh(x)*exp(x)).at n=8A009822
• Number of ways of getting (at least) a straight flush, 4 of a kind, full house, flush, straight, 3 of a kind, 2 pair, a pair in poker.at n=5A057808
• a(n) = 4*(4 + 9*n^2 + 15*n).at n=38A144449
• Row sums of triangle A182700.at n=20A182704
• Smallest k such that the fundamental unit (x+y*w) or (x+y*w)/2 of the real quadratic field Q(sqrt(k)) obeys gcd(k,y)=n.at n=38A197170
• Values of y such that x^2 + y^2 = 41^n with x and y coprime and 0 < x < y.at n=5A230744
• Numbers k such that the sum of the proper divisors of k that have the same binary weight as k is larger than k, and no subset of these divisors sums to k.at n=30A381071