97821

Appears in sequences

• Expansion of 1/(1-x^2-x^3-x^4-x^5-x^6-x^7-x^8).at n=27A013985
• Expansion of (1-x^2)/(1-3x+x^2+3x^3+x^4).at n=17A101498
• Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a tee 1,1 1,2 1,3 2,2 in any orientation.at n=9A145928
• Number of n X n binary arrays symmetric about the diagonal and under 90-degree rotation with all ones connected only in a tee 1,1 1,2 1,3 2,2 in any orientation.at n=21A145930