9471845

Appears in sequences

• Number of sequences (a_1, a_2, ..., a_n) of length n with a_1 = 1 satisfying a_i <= a_{i+1} <= 2*a_i.at n=8A016121
• Rectangular table where column k equals row sums of matrix power A097712^k, read by antidiagonals.at n=46A125860
• Number of n X n symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and all but the outermost 4 rows or columns zero.at n=0A162030
• Number of n X n symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and no more than 8 ones in any row.at n=7A162042
• Number of n X n symmetric binary arrays with rows, considered as binary numbers, in nondecreasing order, and no more than 9 ones in any row.at n=7A162043