131310

Appears in sequences

• Expansion of (-1+3*x-5*x^2+4*x^3) / ((1-2*x)*(2*x^2-1)*(x-1)^2).at n=16A114960
• Number of 4-length words w over n-ary alphabet such that for every prefix z of w we have #(z,a_i) = 0 or #(z,a_i) >= #(z,a_j) for all j>i and #(z,a_i) counts the occurrences of the i-th letter in z.at n=20A213283
• Numbers k such that k+1, 2k+1, 3k+1, 4k+1 are all prime.at n=31A237189
• Number of partitions of 4n into at most 5 parts.at n=33A256539
• Coefficients of 1/(Sum_{k>=0} round((k+1)*r)(-x)^k), where r = 7/5.at n=18A289914
• Number of maximal subsets of {1..n} such that every ordered pair of distinct elements has a different difference.at n=37A325879