A138869 Concatenation of first two digits and last two digits of n-th even superperfect number A061652(n).

22, 44, 1616, 6464, 4096, 6536, 2644, 1024, 1176, 3056, 8164, 8564, 3476, 2664, 5244, 7304, 2276, 1236, 9596, 1404, 2356, 1776, 1496, 2136, 2276, 2056, 4236, 2604, 2604, 2556, 3724, 8744, 6496, 2064, 4056, 3176, 6336, 2196, 4636, 6224, 1404, 6124, 1536, 6236, 1064, 8476, 1556

Offset: 1

Author

Omar E. Pol, Apr 02 2008

Keywords

• nonn
• base

Comments

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

Crossrefs

Cf. A019279, A061652, A138863, A138867, A138868, A138875.

Extensions

More terms from Jinyuan Wang, Mar 14 2020