142 (one hundred [and] forty-two) is the natural number following 141 and preceding 143.
In mathematics
There are 142 connected functional graphs on four labeled vertices,[1] 142 planar graphs with 6 unlabeled vertices,[2] and 142 partial involutions on five elements.[3]
See also
- The year AD 142 or 142 BC
- List of highways numbered 142
- All pages with titles containing 142
References
- ^ Sloane, N. J. A. (ed.). "Sequence A001865 (Number of connected functions on n labeled nodes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A005470 (Number of unlabeled planar simple graphs with n nodes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A005425". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.