A138867 First two digits of n-th even superperfect number A061652(n).

2, 4, 16, 64, 40, 65, 26, 10, 11, 30, 81, 85, 34, 26, 52, 73, 22, 12, 95, 14, 23, 17, 14, 21, 22, 20, 42, 26, 26, 25, 37, 87, 64, 20, 40, 31, 63, 21, 46, 62, 14, 61, 15, 62, 10, 84, 15

Offset

1,1

Comments

Also, first two digits of n-th superperfect number A019279(n), if there are no odd superperfect numbers.

Links

Table of n, a(n) for n=1..47.

Crossrefs

Cf. A019279, A061652, A138862, A138868, A138869, A138873.

Sequence in context: A005027 A153969 A153966 * A138868 A138871 A001901

Adjacent sequences: A138864 A138865 A138866 * A138868 A138869 A138870

Keyword

nonn,base,more

Author

Omar E. Pol, Apr 02 2008

Extensions

a(12)-a(31) from R. J. Mathar, Feb 05 2010

a(32)-a(47) from Jinyuan Wang, Mar 14 2020

Status

approved