a(n) = lcm(sigma(n), A003961(n)), where A003961 is fully multiplicative with a(prime(k)) = prime(k+1), and sigma is the sum of divisors of n.

A342672

a(n) = lcm(sigma(n), A003961(n)), where A003961 is fully multiplicative with a(prime(k)) = prime(k+1), and sigma is the sum of divisors of n.

Terms

    a(0) =1a(1) =3a(2) =20a(3) =63a(4) =42a(5) =60a(6) =88a(7) =135a(8) =325a(9) =126a(10) =156a(11) =1260a(12) =238a(13) =264a(14) =840a(15) =2511a(16) =342a(17) =975a(18) =460a(19) =126a(20) =1760a(21) =468a(22) =696a(23) =540a(24) =1519a(25) =714a(26) =1000a(27) =5544a(28) =930a(29) =2520

External references