A056764 Number of integers k below 2^n such that the cube of number of divisors [A000005(k)] is larger than k.

1, 3, 7, 13, 24, 48, 78, 138, 248, 385, 633, 1032, 1523, 2324, 3470, 4856, 6844, 9369, 12283, 15920, 20001, 24335, 28984, 33563, 37868, 41735, 44946, 47413, 49143

Offset

1,2

Links

Table of n, a(n) for n=1..29.

Example

Below 2^29=536870912 in A056757 altogether 49143 terms occur, so a(29)=49143. Further, still incomplete enumeration shows that a(35)>=51244. The last known term in A056757 is 2793510200.

Crossrefs

Number of entries in A056757 not exceeding 2^n.

Cf. A000005, A029837, A034884, A035033-A035035, A056757-A056767, A056781.

Sequence in context: A076276 A296558 A309051 * A360783 A026103 A328652

Adjacent sequences: A056761 A056762 A056763 * A056765 A056766 A056767

Keyword

nonn

Author

Labos Elemer, Aug 16 2000

Status

approved