A014666 Erroneous version of A027435.

1, 2, 4, 6, 10, 11, 17, 21, 27, 29, 39, 42, 54, 58, 63, 71, 87, 90, 108, 114, 121, 126

Offset

1,2

Comments

Former title: Partial sums of A014665. - Sean A. Irvine, Nov 15 2018

References

S. W. Golomb, personal communication, Svalbard, Norway, 7/97.

Links

Table of n, a(n) for n=1..22.

Formula

For n>1: # of positive integers u <= n(n-1) such that p^H_p(u)<=n for all p<=u, where H_p(u) = highest power of p dividing u.

Crossrefs

Sequence in context: A086917 A004789 A027435 * A067852 A253968 A102025

Adjacent sequences: A014663 A014664 A014665 * A014667 A014668 A014669

Keyword

dead

Author

N. J. A. Sloane.

Status

approved