A099956 Atomic numbers of the alkaline earth metals.
4, 12, 20, 38, 56, 88
Offset: 1
Examples
12 is the atomic number of magnesium.
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.
12 is the atomic number of magnesium.