cp's OEIS Frontend

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.

A127706 Number of nonsingular n X n real {0,1}-matrices n X n which are not robust (cf. A125587) nor in A127186.

Original entry on oeis.org

0, 0, 66, 13616, 9215792
Offset: 1

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Author

Artur Jasinski, Jan 24 2007

Keywords

Crossrefs

Formula

a(n) = A055165(n) - A125587(n) - A127186(n), for n > 1.

Extensions

Name and a(4) corrected by Giovanni Resta, Jul 23 2025