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

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.

Sequence in context: A338814 A134592 A306705 * A355231 A066348 A330978

Adjacent sequences: A165655 A165656 A165657 * A165659 A165660 A165661

Keyword

easy,nonn

Author

Creighton Dement, Sep 24 2009

Status

approved