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Appears in sequences

• Blocks of increasing length using 1,2,3,...,9,10; omit leading 0's.at n=9A001369
• Concatenation of the numbers from 2 to n.at n=8A262571
• Square array A(m,n) = concatenation of { m, m+1, ..., m+n }, with m, n >= 1, read by falling antidiagonals.at n=37A285807