26471

Appears in sequences

• Numbers not of the form a^2 + b^3 + c^4 + d^5 for a,b,c,d >= 0.at n=21A111151
• Numbers k such that A(k+1) = A(k) + 1, where A() = A005101() are the abundant numbers.at n=29A169822
• Hankel transform of A176287.at n=11A176288
• Irregular triangle read by rows: T(n, k) = number of non-equivalent ways to tile an n X n X n triangular area with k 2 X 2 X 2 triangular tiles and an appropriate number (= n^2-4*k) of 1 X 1 X 1 tiles.at n=41A286443
• Expansion of 1/sqrt( (1-x) * (1-x-4*x^4) ).at n=22A383355