A205643 (2,k)-perfect numbers (A019278) such that the next (2,k)-perfect number has the same value of k (in A098223)

2, 84, 480, 32256, 58254, 61440, 1556480, 3932160, 1505806848, 107870873600, 1098437885952

Offset

1,1

Comments

a(12) > 4*10^12, if it exists. - Giovanni Resta, Feb 26 2020

Links

Table of n, a(n) for n=1..11.

Crossrefs

Cf. A019278, A098223.

Sequence in context: A099373 A169601 A367900 * A215263 A265591 A348265

Adjacent sequences: A205640 A205641 A205642 * A205644 A205645 A205646

Keyword

nonn,more

Author

Jud McCranie, Feb 08 2012

Extensions

a(11) from Giovanni Resta, Feb 26 2020

Status

approved