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A307491
Numbers that are both centered triangular and tetrahedral.
1
1, 4, 10, 4960, 428536
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OFFSET
1,2
COMMENTS
If it exists, a(6) > 10^29. -
Bert Dobbelaere
, Apr 12 2019
LINKS
Table of n, a(n) for n=1..5.
Eric Weisstein's World of Mathematics,
Centered Triangular Number
Eric Weisstein's World of Mathematics,
Tetrahedral Number
CROSSREFS
Intersection of
A000292
and
A005448
.
Cf.
A003556
,
A027568
,
A128862
,
A131750
,
A307492
.
Sequence in context:
A085649
A152396
A326720
*
A356110
A048873
A091390
Adjacent sequences:
A307488
A307489
A307490
*
A307492
A307493
A307494
KEYWORD
nonn
,
more
AUTHOR
Ilya Gutkovskiy
, Apr 10 2019
STATUS
approved
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Last modified April 20 09:50 EDT 2024. Contains 371800 sequences. (Running on oeis4.)