A097019 a(n)=sigma[A097018(n)]/p[n]=A000203[A097018(n)]/A000040(n).

2, 1, 3, 1, 4, 1, 4, 2, 6, 6, 1, 2, 4, 6, 6, 4, 6, 3, 6, 4, 7, 2, 4, 23, 2, 10, 6, 6, 6, 6, 1, 4, 4, 2, 10, 12, 2, 6, 10, 4, 10, 8, 22, 8, 4, 2, 2, 8, 4, 2, 16, 6, 14, 12, 12, 4, 6, 2, 12, 4, 6, 4, 1, 10, 6, 6, 2, 2, 6, 8, 10, 6, 2, 6, 2, 4, 6, 6, 22, 7, 16, 12, 4, 8, 2, 6, 6, 6, 12, 6, 4, 10, 12, 10, 2

Offset

1,1

Links

Table of n, a(n) for n=1..95.

Example

n=11: a[11]=1: the quotient of the earliest number whose sigma is divisible by the 11th prime and p[11]=31.

Crossrefs

Cf. A000203, A000040, A097018.

Sequence in context: A340273 A029234 A102613 * A262999 A324933 A085343

Adjacent sequences: A097016 A097017 A097018 * A097020 A097021 A097022

Keyword

nonn

Author

Labos Elemer, Aug 23 2004

Status

approved