A138875 Concatenation of first two digits and last two digits of n-th even perfect number.

66, 2828, 4996, 8128, 3336, 8556, 1328, 2328, 2676, 1916, 1328, 1428, 2376, 1428, 5428, 1028, 9976, 3356, 1836, 4028, 1116, 5976, 3936, 9356, 1076, 8116, 3656, 1428, 1328, 1316, 2728, 1528, 8336, 8428, 3316, 1976, 8156, 9536, 4256, 7928, 4428, 7428, 4956, 7756, 2028, 1476, 5016

Offset

1,1

Links

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

Jan Munch Pedersen, Known Perfect Numbers [BROKEN LINK]

Crossrefs

Cf. A000396, A104511, A138843, A138863, A138866, A138877.

Sequence in context: A173124 A004365 A062152 * A138877 A265454 A004998

Adjacent sequences: A138872 A138873 A138874 * A138876 A138877 A138878

Keyword

base,nonn

Author

Omar E. Pol, Apr 02 2008

Extensions

More terms from http://amicable.homepage.dk/perfect.htm sent by Steven Bi (chenhsi(AT)stanford.edu), Dec 22 2008

More terms from same site sent by Steven Bi (chenhsi(AT)stanford.edu), Jan 09 2009

More terms from Jinyuan Wang, Mar 14 2020

Status

approved