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A137706
Smallest number at which a new Haar graph is encountered.
5
1, 2, 3, 4, 5, 7, 8, 9, 10, 11, 15, 16, 17, 19, 23, 31, 32, 33, 34, 35, 36, 37, 39, 42, 43, 45, 47, 63, 64, 65, 67, 69, 71, 75, 79, 95, 127, 128, 129, 130, 131, 133, 135, 136, 137, 138, 139, 141, 143, 151, 153, 155, 159, 170, 171, 175, 187, 191, 255, 256, 257, 259, 260
OFFSET
1,2
LINKS
Pontus von Brömssen, Table of n, a(n) for n = 1..10000
Eric Weisstein's World of Mathematics, Haar Graph
EXAMPLE
Haar(5) and Haar(6) are both isomorphic to the 6-cycle graph, so 5 appears in the sequence but 6 does not.
CROSSREFS
Cf. A272919 (numbers that uniquely index a Haar graph), A357000.
Sequence in context: A334273 A114994 A357006 * A324766 A336621 A039224
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, Feb 07 2008
EXTENSIONS
Name clarified by Eric W. Weisstein, Aug 19 2017
STATUS
approved