A269626 a(n) = A003418(n) / A058312(n) with a(0) = 1.

1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 5, 5, 55, 55, 55, 55, 55, 55, 55

Offset

0,16

Links

Table of n, a(n) for n=0..83.

Prog

(PARI) a(n)=lcm([1..n])/denominator(sum(k=1, n, (-1)^(k+1)/k))

Crossrefs

Cf. A003418, A058312, A110566.

Sequence in context: A125563 A093704 A271509 * A269268 A112110 A142864

Adjacent sequences: A269623 A269624 A269625 * A269627 A269628 A269629

Keyword

nonn

Author

Jeppe Stig Nielsen, Mar 01 2016

Status

approved