Scan the decimal expansion of a constant (including any digits to the left of the decimal point) until all -digit strings have been seen (including 0-padded strings). The following table then gives the number of digits that must be scanned to encounter all , 2, ...-digit strings (where "number of digits" means the ending-not starting-digit of an -digit string) together with the last -digit string encountered.

The starting positions of the first occurrence of , 1, 2, ... in the decimal expansion of a number of constants are summarized in the table below, where any initial 0 to the left of the decimal point is ignored non any nonzero initial digits are counted as the "first" digit.

REFERENCES:

Sloane, N. J. A. Sequences A032445, A032510, A036900, A036901, A036902, A036904, A036905, A036906, A072290, A080597, A088576, A088577, A100077, A100079, A229124, A229126, A229186, A229187, A229190, A229192, A229193, A229195, A229197, A229199, A229200, and A229201 in "The On-Line Encyclopedia of Integer Sequences."