28239

Appears in sequences

• Numbers n such that 3^n + 2^(n-1) is prime.at n=43A082103
• Square root of pi(A064523(n)).at n=16A115835
• Number of partitions of n such that the number of parts is not divisible by the greatest part.at n=38A200727
• Number of terms of A072873 less than or equal to 10^n.at n=43A267757
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-1) + n, where a(0) = 1, a(1) = 2, b(0) = 3, and (a(n)) and (b(n)) are increasing complementary sequences.at n=17A294546
• For 1<=x<=n, 1<=y<=n, with gcd(x,y)=1, write 1 = gcd(x,y) = u*x+v*y with u,v minimal; a(n) = sum of the values of u^2+v^2.at n=29A345431