A261244 Row sums of A261242: number of connected binary bisymmetric n X n matrices B with B[1,1] = 1 = B[2,2].

1, 1, 3, 9, 58, 384

Offset: 1

Author

Wolfdieter Lang and Kival Ngaokrajang, Aug 18 2015

Keywords

• nonn
• more

Comments

For the definition of a connected binary bisymmetric n X n matrix B with the four corners occupied by 1s see the comment under A261242.

Crossrefs

Cf. A261242.