532170

Appears in sequences

• Pisot sequence E(14,23), a(n) = floor( a(n-1)^2/a(n-2)+1/2 ).at n=21A010902
• "BIK" (reversible, indistinct, unlabeled) transform of 2,2,2,2...at n=12A032124
• Sums of two distinct powers of 9.at n=18A038487
• Sums of two powers of 9.at n=24A055260
• Number of periodic palindromic structures of length n using a maximum of three different symbols.at n=26A056504
• Numbers k such that core(k) = ceiling(sqrt(k)) where core(k) is the squarefree part of k (the smallest integer such that k*core(k) is a square).at n=25A069187
• a(n) = n^2*(n^2+1).at n=27A071253
• Number of strings over Z_3 of length n with trace 0 and subtrace 2.at n=13A073949
• Number of strings over Z_3 of length n with trace 1 and subtrace 0.at n=13A073950
• Number of elements of GF(3^n) with trace 0 and subtrace 1.at n=13A074001
• Number of elements of GF(3^n) with trace 1 and subtrace 2.at n=13A074005
• a(n) = 3^n + 9^n.at n=6A074610
• Numbers that can be represented as j^6 + k^6, with 0 < j < k, in exactly one way.at n=30A088677
• a(n) = (3^n + 2*3^(n/2)*cos(n*Pi/6))/3.at n=13A092236
• Expansion of 2*x^2*(1-2*x) / ((3*x-1)*(3*x^2-1)).at n=13A122007
• Number of elements of order n in the simple unitary group U3(9).at n=3A284980
• a(1) = 2, a(2) = 4, a(3) = 6; for n > 3, a(n) = 3*a(n-1) - 3*a(n-2) + 9*a(n-3).at n=12A318609
• a(n) = n^6 * Product_{p|n, p prime} (1 + 1/p^6).at n=8A351301
• a(n) = n^6 * Sum_{d^2|n} 1 / d^6.at n=8A351604
• Sum of the 6th powers of the divisor complements of the odd proper divisors of n.at n=8A352052