127038

Appears in sequences

• Number of alternating polynomials of degree 3n in GF(2)[X], n>0.at n=21A165912
• Number of (n+2)X(n+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010001 00010101 or 01010101.at n=5A261105
• Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00010001 00010101 or 01010101.at n=5A261111