a(n) = sigma(A003961(n^2)), where A003961 is fully multiplicative with a(prime(i)) = prime(i+1), and sigma is the sum of divisors function.

A379482

a(n) = sigma(A003961(n^2)), where A003961 is fully multiplicative with a(prime(i)) = prime(i+1), and sigma is the sum of divisors function.

Terms

    a(0) =1a(1) =13a(2) =31a(3) =121a(4) =57a(5) =403a(6) =133a(7) =1093a(8) =781a(9) =741a(10) =183a(11) =3751a(12) =307a(13) =1729a(14) =1767a(15) =9841a(16) =381a(17) =10153a(18) =553a(19) =6897a(20) =4123a(21) =2379a(22) =871a(23) =33883a(24) =2801a(25) =3991a(26) =19531a(27) =16093a(28) =993a(29) =22971

External references