77414400

Appears in sequences

• a(n) = (2*n+6)!!/6!!, related to A000165 (even double factorials).at n=7A051580
• a(n) = binomial(n+1,2)*n!/n!!.at n=14A293656
• Numbers that reach 1 under the iterations of the map k -> k/d(k) if d(k) | k, and k -> k otherwise, where d(k) is the number of divisors of k (A000005).at n=17A330816
• a(0) = 1; for n >= 1, a(n) is the least integer k > a(n-1) such that k / A000005(k) = a(n-1).at n=6A360806
• Obverse convolution (n)**(3n+2); see Comments.at n=6A374866