A165657 Numerators of A002110 divided by A102647, starting from the second term of both.

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

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