Numerator of ratio n*sigma(A003961(n)) / sigma(n)*A003961(n), where sigma is the sum of divisors of n, and A003961 shifts the prime factorization of n one step towards larger primes.

A341526

Numerator of ratio n*sigma(A003961(n)) / sigma(n)*A003961(n), where sigma is the sum of divisors of n, and A003961 shifts the prime factorization of n one step towards larger primes.

Terms

    a(0) =1a(1) =8a(2) =9a(3) =52a(4) =20a(5) =4a(6) =21a(7) =64a(8) =279a(9) =160a(10) =77a(11) =26a(12) =117a(13) =28a(14) =6a(15) =1936a(16) =170a(17) =248a(18) =114a(19) =1040a(20) =189a(21) =308a(22) =115a(23) =32a(24) =1425a(25) =104a(26) =1053a(27) =26a(28) =464a(29) =16

External references