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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A147794 Number of nodes at n-th level in tree in which top node is 1; each node k has children labeled 1, 2, ..., k*(k+1) at next level.

Table of values

n a(n)
0 1
1 2
2 8
3 120
4 40456
5 14354709112
6 10145806838546891496456
7 43814454551364119293851205505402899467594454136
8 12230705010706858303154182089533811056819321112988144670126813673854225371091425006635639297686024

List of values

[1, 2, 8, 120, 40456, 14354709112, 10145806838546891496456, 43814454551364119293851205505402899467594454136, 12230705010706858303154182089533811056819321112988144670126813673854225371091425006635639297686024]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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