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A176874
Minimal nonnegative integer that cannot be represented as the sum of an m-gonal and a k-gonal number for any k,m less than n.
5
0, 5, 23, 62, 62, 723, 1578, 1578, 8139, 39644, 94323, 94323, 1317783, 1680515, 2025699, 3205598, 23003999, 113333163, 170717819, 1710518799, 3608109348, 16655876439, 24090452279
OFFSET
3,2
COMMENTS
Indices of records in A176873 (with repetitions).
LINKS
Max Alekseyev, Proof that the sequence is infinite. [Sequence Fans mailing list, Apr 26 2010.]
FORMULA
a(n) = smallest integer s such that A176873(s) >= n.
CROSSREFS
Sequence in context: A159241 A179094 A373538 * A331987 A241765 A106956
KEYWORD
hard,more,nonn
AUTHOR
EXTENSIONS
Edited by N. J. A. Sloane, Apr 29 2010
a(19)-a(22) from Jon E. Schoenfield, Aug 08 2010
a(23)-a(25) from Donovan Johnson, Jan 24 2011
STATUS
approved