156009

Appears in sequences

• a(n) = (8*n+1)*(8*n+3)*(8*n+5)*(8*n+7).at n=2A001546
• Seventh column of (1,5)-Pascal triangle A096940.at n=16A096944
• Denominator of -16/((n+2)*n*(n-2)*(n-4)).at n=20A117465
• a(n) = (4*n+1)*(4*n+3)*(4*n+5)*(4*n+7).at n=4A154633
• a(n) = n*(n+2)*(n+4)*(n+6).at n=16A190577
• Numbers k such that the sum of the distinct prime divisors of k equals three times the largest prime divisor of k.at n=12A200090
• a(n) = binomial(n^2,3)/(2*n).at n=17A201106
• G.f.: Product_{k>=1} (1 + 2*x^(k^2)) / (1-x^k).at n=37A280224
• a(1) = 1 and for any n > 1, if A330647(n) divides a(n-1) then a(n) = a(n-1) / A330647(n), otherwise a(n) = a(n-1) * A330647(n).at n=23A330648
• Numbers such that the sum of prime factors without repetition divides the product of prime factors without repetition and each division yields a greater quotient.at n=29A380487