30614

Appears in sequences

• Number of (w,x,y,z) with all terms in {1,...,n} and w*x-y*z<=n.at n=15A212109
• Coefficients in the expansion of 1/([r] + [2r]x + [3r]x^2 + ...); [ ] = floor, r = 8/5.at n=18A279780
• a(n) = binomial(2*p-1, p-1) modulo p^5, where p = prime(n).at n=4A282410
• Coefficients in the expansion of 1/([r]-[2r]x+[3r]x^2-...); [ ]=floor, r=8/5.at n=18A289260
• Numbers k such that m = 2*k is the middle side in a Heronian triangle with sides m - 11, m, m + 11.at n=19A296795
• Number of compositions (ordered partitions) of n into distinct parts, the least being 2.at n=36A339163
• Number of binary necklaces of length n which have more 01 than 00 substrings.at n=16A371570