A161323 -id:A161323 - cp's OEIS frontend

A161514 Number of digits in n-th even perfect number written in base 8.

1, 2, 3, 5, 9, 11, 13, 21, 41, 59, 71, 85, 347, 405, 853, 1469, 1521, 2145, 2835, 2949, 6459, 6627, 7475, 13291, 14467, 15473, 29665, 57495, 73669, 88033, 144061, 504559, 572955, 838525, 932179, 1984147, 2014251, 4648395, 8977945, 13997341, 16024389, 17309967, 20268305, 21721771, 24771111, 28429201, 28741739

Offset: 1

Juri-Stepan Gerasimov, Jun 12 2009

Or number of digits in A161323(n), assuming that all perfect numbers are even.

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

Cf. A000396, A161323.

Definition changed (inserting the word "even"), a(12) and a(27) corrected and a(40)-a(45) added by Ivan Panchenko, Aug 06 2018

A161496 Number of zeros in n-th even perfect number written in base 16.

Original entry on oeis.org

0, 0, 1, 1, 3, 4, 4, 7, 15, 22, 26, 31, 130, 151, 319, 550, 570, 804, 1063, 1105, 2422, 2485, 2803, 4984, 5425, 5802, 11124, 21560, 27625, 33012, 54022, 189209, 214858, 314446, 349567, 744055, 755344, 1743148, 3366729, 5249002, 6009145, 6491237, 7600614, 8145664, 9289166

Offset: 1

Juri-Stepan Gerasimov, Jun 11 2009

Amiram Eldar, Table of n, a(n) for n = 1..48 (terms 1..47 from Ivan Panchenko)

Cf. A000396, A135650, A160962, A161323.

a(n) = floor((A000043(n)-1)/4). - Gerson Washiski Barbosa, May 29 2011

Definition changed (inserting the word "even"), a(31) corrected and a(41)-a(45) added by Ivan Panchenko, Aug 04 2018

cp's OEIS Frontend

A161514 Number of digits in n-th even perfect number written in base 8.

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