45941

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=40A056640
• Number of nX5 0..1 arrays with every element equal to 0, 1, 2, 4, 6 or 8 king-move adjacent elements, with upper left element zero.at n=11A299385
• Number of non-unimodal sequences of length n covering an initial interval of positive integers.at n=7A328509