A165657 - OEIS

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A165657

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

3

2, 3, 15, 105, 385, 5005, 17017, 323323, 1062347, 30808063, 434113615, 35336848261, 1448810778701, 33545541876077, 266186053068611, 5426100312552455, 9156001667401012567, 42962777054727828199

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..18.

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, numerator(a1(n)/b1(n))); for(n=1, 20, print1(a(n) ", "))

CROSSREFS

Cf. A002110, A102647, A165658, A165659, A165660.

Sequence in context: A358119 A238711 A362999 * A091835 A131612 A297421

Adjacent sequences: A165654 A165655 A165656 * A165658 A165659 A165660

KEYWORD

easy,nonn

AUTHOR

Creighton Dement, Sep 24 2009

STATUS

approved