A260161 a(n) is the a(n-1)-th a(n-2)-dimensional simplex number, starting with the terms 1, 2.

1, 2, 2, 3, 6, 56, 55525372

Offset: 1

Author

Robin Powell, Nov 09 2015

Keywords

• nonn

Comments

The next term is too large to include.

Examples

			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.
		

Links

• OEIS Wiki, Simplicial polytopic numbers

Crossrefs

Cf. A000217, A000292, A000579.