50643

Appears in sequences

• a(n) = Sum_{k=0..9} binomial(n,k).at n=16A008862
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 25.at n=8A031703
• a(n) = 2^n - C(n,0) - C(n,1) - ... - C(n,6).at n=16A035039
• Start with 1 and repeatedly reverse the digits and add 38 to get the next term.at n=31A118634
• a(n) = 625*n^2 + 2*n.at n=8A158382
• a(n) = Sum_{i=0..n+1} binomial(2*n,n-i+1).at n=8A277924
• Odd numbers divisible by 3 which are neither of the form p + 3^m + 1 nor of the form p + 3^m - 1 with p prime.at n=6A282191
• a(n) = 99*2^n - 45 (n>=0).at n=9A304172
• Number of generalized polyforms on the truncated trihexagonal tiling with n cells.at n=8A344213
• a(n) = number of subsets of {1,2,...,n} that contain more nonprimes than primes.at n=16A369853