85248

Appears in sequences

• a(n) = A004017(n)/2.at n=21A045825
• a(n) = A110722(n)/121.at n=24A110723
• Triangle read by rows: T(n,k) is the number of deco polyominoes of height n and having k columns ending at an even level (1<=k<=n). A deco polyomino is a directed column-convex polyomino in which the height, measured along the diagonal, is attained only in the last column.at n=40A121698
• Number of 3 X 3 semimagic squares with distinct positive values and magic sum n.at n=23A173547
• First position of A218860(n) in A066135.at n=26A218861
• Number of compositions of n into parts 3, 5 and 8.at n=57A245369
• Numbers whose product of prime indices is twice their sum of prime indices.at n=40A326151
• a(n) is the number of large or small squares that are used to tile primary squares of type 1 (see A344331) whose side length is A345285(n).at n=37A345286
• a(n) = Sum_{k=0..n} (1-i)^k * (1+i)^(n-k) * binomial(n+2,k) * binomial(n+2,n-k), where i is the imaginary unit.at n=7A387402