23953

Appears in sequences

• At stage 1, start with a unit square. At each successive stage add 4*(n-1) new squares around outside with edge-to-edge contacts. Sequence gives number of squares (regardless of size) at n-th stage.at n=32A056640
• Number of n X n binary arrays with all ones connected only in a 110-111-101 pattern in any orientation.at n=6A146256
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 110-111-101 pattern in any orientation.at n=14A146258
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 110-111-101 pattern in any orientation.at n=15A146258
• Number of ballot sequences of length n having largest descent 4.at n=6A244200
• Numbers k for which rank of the elliptic curve y^2=x^3+k*x is 4.at n=21A309031
• Number of integer partitions of n with a difference < -1 and a conjugate difference < -1.at n=38A350839