Denominator 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.

A341527

Denominator 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) =9a(2) =10a(3) =63a(4) =21a(5) =5a(6) =22a(7) =81a(8) =325a(9) =189a(10) =78a(11) =35a(12) =119a(13) =33a(14) =7a(15) =2511a(16) =171a(17) =325a(18) =115a(19) =1323a(20) =220a(21) =351a(22) =116a(23) =45a(24) =1519a(25) =119a(26) =1250a(27) =33a(28) =465a(29) =21

External references