
1, 2, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 16, 17, 18, 19, 22, 23, 24, 25, 27, 28, 29, 30, 31, 33, 34, 35, 38, 39, 40, 41, 44, 45, 46, 47, 49, 50, 51, 52, 55, 56, 58, 60, 61, 62, 64, 65, 66, 67, 68, 71, 72, 73, 76, 77, 78, 79, 81, 82, 84, 85, 87, 88, 92, 93, 94, 97, 98, 99, 101
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OFFSET

1,2


COMMENTS

Complement of A117105. This is to heptagonal numbers A000566,
as A007536 is to hexagonal numbers A000384,
as A003679 is to pentagonal numbers A000326,
and as A004214 is to squares A000290.
This sequence is presumably finite: what is its likely last element?
Last element appears to be a(1671) = 273118. Charles R Greathouse IV


LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 1..1671


CROSSREFS

Cf. A000290, A000326, A000384, A000566, A003679, A004214, A007536, A117105.
Sequence in context: A047263 A039244 A160044 * A127428 A039187 A001963
Adjacent sequences: A180914 A180915 A180916 * A180918 A180919 A180920


KEYWORD

easy,nonn


AUTHOR

Jonathan Vos Post, Sep 23 2010


EXTENSIONS

Comment and bfile from Charles R Greathouse IV, Sep 27 2010


STATUS

approved

