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A260161 a(n) is the a(n-1)-th a(n-2)-dimensional simplex number, starting with the terms 1, 2. 1
1, 2, 2, 3, 6, 56, 55525372 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The next term is too large to include.

LINKS

Table of n, a(n) for n=1..7.

OEIS Wiki, Simplicial polytopic numbers

EXAMPLE

56 is the 6th 3-simplex (or tetrahedral) number = A000292(6).

55525372 is the 56th 6-simplex number = A000579(61).

The next term will be the 55525372th 56-simplex number.

CROSSREFS

Cf. A000217, A000292, A000579.

Sequence in context: A060631 A275487 A096100 * A195694 A021451 A210188

Adjacent sequences:  A260158 A260159 A260160 * A260162 A260163 A260164

KEYWORD

nonn

AUTHOR

Robin Powell, Nov 09 2015

STATUS

approved

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Last modified October 17 15:01 EDT 2019. Contains 328116 sequences. (Running on oeis4.)