1,2

The next term is too large to include.

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

OEIS Wiki, Simplicial polytopic numbers

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.

Cf. A000217, A000292, A000579.

Sequence in context: A060631 A275487 A096100 * A195694 A021451 A210188

Adjacent sequences: A260158 A260159 A260160 * A260162 A260163 A260164

nonn

Robin Powell, Nov 09 2015

approved