Original entry on oeis.org
6, 4, 2, 3, 2, 3, 4, 5, 6, 8, 10, 13, 15, 18, 20, 22, 25, 29, 32, 33, 34, 37, 39, 41, 42, 44, 45
Offset: 1
a(1)=6 since the first uniform letter rate (in 1863) was 3 cents per 1/2 ounce.
a(2)=4 since this rate was reduced to 2 cents per 1/2 ounce in 1883.
a(3)=2 since a per ounce price of 2 cents was instituted in 1885.
A097618
Successive basic U.S. postal rates since "uniform" rates (based on weight, not distance) were adopted in 1863.
Original entry on oeis.org
3, 2, 3, 2, 3, 4, 5, 6, 8, 10, 13, 15, 18, 20, 22, 25, 29, 32, 33, 34, 37, 39, 41, 42, 44, 45
Offset: 0
The basic domestic letter rate was 3 cents from 1863 to 1883, then 2 cents until 1917, then 3 cents until 1919 when it dropped to 2 cents for the last time.
A114139
Changes in United States postal rates per ounce since 1863.
Original entry on oeis.org
-2, -2, 1, -1, 1, 1, 1, 1, 2, 2, 0, 3, 2, 3, 2, 2, 3, 4, 3, 3, 1, 1, 3, 2
Offset: 1
a(1) = -2 because the rate per half ounce was lowered effective 3 March 1863 from 3 cents to 2 cents; thereafter rates were per ounce.
- R. K. Guy, Unsolved Problems in Number Theory, C12.
- R. Alter and J. A. Barnett, A postage stamp problem, Amer. Math. Monthly, Vol. 87, No. 3 (1980), 206-210.
- A. K. Dart, The History of Postage Rates in the United States
- W. F. Lunnon, A postage stamp problem, Comput. J., Vol. 12, No. 4 (1969) 377-380.
- USPS, Benjamin Franklin Commemorative Stamps
- 1847usa.com, United States Postage Stamps By Year.
Cf.
A001212,
A001213,
A014616,
A001208,
A001209,
A001210,
A001211,
A001212,
A001213,
A001214,
A001215,
A001216,
A005342,
A005343,
A005344,
A014616,
A053346,
A053348,
A075060,
A084192,
A084193.
Showing 1-3 of 3 results.
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