90699264

Appears in sequences

• a(n) = 6*a(n-2), starting with 1, 3, 9.at n=20A026565
• a(n) = Sum_{k=0..2n} (k+1) * A026519(n, k).at n=17A027266
• a(n) = Sum_{k=0..2n} (k+1) * A026552(n, k).at n=17A027276
• a(n) = n*6^n.at n=9A036292
• Multiplicative 3-wave sequence starting with 1,2,3.at n=9A068587
• Product of three solutions of the Diophantine equation x^2 - y^2 = z^3.at n=5A085482
• Denominator of Bernoulli(n, -1/6).at n=11A158207
• Maximal values of permanent on (0,1) square matrices of order n with row and column sums 3.at n=28A232553