50852

Appears in sequences

• Numbers whose base-15 representation has exactly 5 runs.at n=1A043672
• 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=23A051024
• Let s(k) denote the k-th term of an integer sequence such that s(0)=0 and s(i) for all i>0 is the least natural number such that no four elements of {s(0),..,s(i)} are in arithmetic progression. Then it appears that there are many set of 3 consecutive integers in s(k). Sequence gives the smallest element in those triples.at n=35A071711
• Number of -5..5 arrays x(0..n+1) of n+2 elements with zero sum and nonzero first and second differences.at n=3A200451
• T(n,k)=Number of -k..k arrays x(0..n+1) of n+2 elements with zero sum and nonzero first and second differences.at n=31A200454
• Number of -n..n arrays x(0..5) of 6 elements with zero sum and nonzero first and second differences.at n=4A200458
• Total sum of number of lambda-parking functions, where lambda ranges over all partitions of n into distinct parts.at n=19A265016
• p-INVERT of (1,0,1,0,0,0,0,...), where p(S) = (1 - S)^4.at n=14A291727
• Number of n-bead necklace structures which are not self-equivalent under a nonzero rotation using exactly four different colored beads.at n=11A328741