53985

Appears in sequences

• a(n) = n*(16*n^2 - 1).at n=14A069975
• Multiplicative closure of twin prime pair products (A037074).at n=35A074480
• Squarefree numbers k such that A076341(k) = 0.at n=17A076352
• Sum of all terms on the two principal diagonals of a 2n+1 X 2n+1 square spiral.at n=21A114254
• Numerators b(n) of Pythagorean approximations b(n)/a(n) to 7/4.at n=5A195569
• Squarefree numbers which yield zero when their prime factors are xored together.at n=28A235488
• Squarefree products of k primes that are symmetrically distributed around their average. Case k = 4.at n=25A294751