90030

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 20.at n=30A031698
• Consider the Diophantine equation x^3 + y^3 = z^3 + 1 (1 < x < y < z) or 'Fermat near misses'. Sequence gives values of z in monotonic increasing order.at n=36A050791
• a(n) = concatenation of n^2 and n.at n=29A055436
• a(n) = 100*n^2 + n.at n=29A055438
• Subsequence of 'Fermat near misses' which is generated by a simple formula based on the cubic binomial expansion along with formulas for the corresponding terms in the expression, x^3 + y^3 = z^3 + 1.at n=9A141326
• a(n) = 400*n^2 + 2*n.at n=14A158312
• a(n) = 900*n^2 + 30.at n=10A158672
• Expansion of Product_{k>=1} B(x^k), where B(x) is the g.f. of A003106.at n=53A327691