A165658 - OEIS

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A165658

Denominators of A002110 divided by A102647, starting from the second term of both.

1, 1, 1, 4, 6, 48, 64, 96, 576, 1728, 13824, 165888, 1036800, 9953280, 119439360, 297271296, 134369280000, 222953472000, 75246796800, 32105299968000, 229323571200, 568865783808000000, 125150472437760000, 6129819058176000

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,4

LINKS

Table of n, a(n) for n=1..24.

PROG

(PARI) a1(n)=prod(i=1, n, prime(i));

b1(n)=prod(i=1, n, prime(n+1)%prime(i));

a(n)=if(n<0, 0, denominator(a1(n)/b1(n)));

for(n=1, 25, print1(a(n) ", "))

CROSSREFS

Cf. A002110, A102647, A165657, A165659, A165660.