A201186 Incorrect list of perfect numbers from Robert Recorde's Whetstone of Witte.

6, 28, 496, 8128, 130816, 2096128, 33550336, 536854528

Offset

1,1

Comments

In this list, only items 6, 28, 496, 8128 and 33550336 are perfect numbers.

References

Jack Williams, Robert Recorde Tudor Polymath, Expositor and Practitioner of Computation, Springer, 2011, page 176.

Links

Table of n, a(n) for n=1..8.

Robert Recorde, The Whetstone of Witte, whiche is the seconde parte of Arithmeteke: containing the extraction of rootes; the cossike practise, with the rule of equation; and the workes of Surde Nombers, London, 1557. See p. 24.

Crossrefs

Cf. A000396 (perfect numbers), A079598.

Sequence in context: A325637 A336702 A325654 * A060286 A000396 A152953

Adjacent sequences: A201183 A201184 A201185 * A201187 A201188 A201189

Keyword

nonn,fini,full

Author

Olivier Gérard, Nov 28 2011

Status

approved