23914845

Appears in sequences

• a(n) = 5*3^n.at n=14A005030
• Third column of triangle A067402.at n=8A067403
• Numbers whose sum of exponents is equal to the product of prime factors.at n=24A071174
• a(n) = a(n-1) + a(n-2) + gcd(a(n-1), a(n-2)) for n > 1; a(0)=1, a(1)=1.at n=31A083658
• a(0)=1, a(1)=5, a(n) = -3*a(n-1), n>1.at n=15A084244
• Triangle T, read by rows, where matrix power T^3 has powers of 3 in the secondary diagonal: [T^3](n+1,n) = 3^(n+1), with all 1's in the main diagonal and zeros elsewhere.at n=32A117252
• a(n) = 3*a(n-2) for n > 2; a(1) = 5, a(2) = 3.at n=28A162813
• a(n) = 3*a(n-2) for n > 2; a(1) = 1, a(2) = 5.at n=29A166465
• a(n) = n^7*(n + 1)/2.at n=9A168635
• a(n) = (n+1) * 3^(n-1).at n=13A288834
• a(n) = Product prime(k), where k ranges over the lengths of all arithmetic progressions formed from the divisors of n (with at least two distinct terms each); a(1) = 2 by convention.at n=27A319354
• Record values in A085908.at n=39A376280