22833

Appears in sequences

• Somos-5 sequence: a(n) = (a(n-1) * a(n-4) + a(n-2) * a(n-3)) / a(n-5), with a(0) = a(1) = a(2) = a(3) = a(4) = 1.at n=14A006721
• OR-convolution of squares A000290 with themselves.at n=32A033459
• Numbers k that can be expressed as k = w + x = y*z with w*x = y^3 + z^3 where w, x, y, and z are all positive integers.at n=34A057372
• Column 2 of triangle A091602.at n=49A091605
• a(0) = 1, a(1) = 1 and for n >= 2, a(n) = floor(4 * a(n-2) * a(n-1) / (a(n-2) + a(n-1))).at n=24A093335
• Subsequence of terms of even index in the Somos-5 sequence.at n=7A097495
• Expansion of 1/(1-x/(1-x)*A(x/(1-x))) where A(x) is the g.f. of A002293.at n=7A186186
• G.f.: A(x) = exp( Sum_{n>=1} x^n/n * Product_{k>=1} (1 + x^(n*k)) ).at n=23A218153
• Row sums of triangle A285066.at n=4A285067
• a(n) = Sum_{k>=0} (n*k + 1)^n/2^(k+1).at n=4A308864