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A334010
a(n) is the least integer that can be expressed as the sum of one or more consecutive nonzero hexagonal numbers in exactly n ways.
6
1, 703, 274550, 11132303325
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OFFSET
1,2
LINKS
Table of n, a(n) for n=1..4.
Eric Weisstein's World of Mathematics,
Hexagonal Number
Index to sequences related to polygonal numbers
EXAMPLE
Let S(k, m) denote the sum of m hexagonal numbers starting from the k-th. We have
a(1) = S(1, 1);
a(2) = S(19, 1) = S(13, 2);
a(3) = S(62, 25) = S(184, 4) = S(25, 51);
a(4) = S(3065, 505) = S(22490, 11) = S(1215, 1430) = S(1938, 946).
CROSSREFS
Cf.
A000384
,
A054859
,
A068314
,
A186337
,
A298467
,
A319185
,
A334007
,
A334008
,
A334011
,
A334012
.
Sequence in context:
A083735
A161021
A283521
*
A257721
A253396
A188370
Adjacent sequences:
A334007
A334008
A334009
*
A334011
A334012
A334013
KEYWORD
nonn
,
hard
,
more
AUTHOR
Ilya Gutkovskiy
, Apr 12 2020
EXTENSIONS
a(4) from
Giovanni Resta
, Apr 13 2020
STATUS
approved
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Last modified May 21 15:47 EDT 2024. Contains 372738 sequences. (Running on oeis4.)