50854

Appears in sequences

• a(n) = (n+1)*(n^2+n+2)/2; g.f.: (1 + 2*x^2) / (1 - x)^4.at n=46A006000
• Numbers whose base-15 representation has exactly 5 runs.at n=3A043672
• Values of n for which pi_{4,3}(p_n) - pi_{4,1}(p_n) = -1, where p_n is the n-th prime and pi_{m,a}(x) is the number of primes <= x which are congruent to a (mod m).at n=24A051024
• Number of integers k not exceeding 2^n such that the cube of number of divisors [A000005(k)] is larger than k.at n=30A056764
• Number of integer partitions of n into an odd number of parts, the greatest of which is odd.at n=49A340385
• The fifth term of the greedy B_n set of natural numbers.at n=45A369817