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A364727 Numbers k such that k and k+1 are both admirable numbers (A111592). 1
29691198404, 478012798575, 2789405835075, 22929723392715 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
a(1)-a(2) were found by Giovanni Resta.
LINKS
Table of n, a(n) for n=1..4.
Giovanni Resta, admirable numbers, Numbers Aplenty.
CROSSREFS
Subsequence of A096399 and A111592.
Cf. A109729, A109730.
Sequence in context: A252839 A307760 A216017 * A172852 A172694 A290503
Adjacent sequences: A364724 A364725 A364726 * A364728 A364729 A364730
KEYWORD
nonn,hard,more
AUTHOR
Amiram Eldar, Aug 05 2023
EXTENSIONS
a(4) from Martin Ehrenstein, Aug 06 2023
STATUS
approved

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Last modified June 8 13:51 EDT 2024. Contains 373217 sequences. (Running on oeis4.)