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A075052
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Write down squares and cubes in order, as in A002760. The sequence gives the first differences between terms.
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1
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1, 3, 4, 1, 7, 9, 2, 9, 13, 15, 17, 19, 21, 4, 19, 25, 27, 20, 9, 31, 33, 35, 19, 18, 39, 41, 43, 28, 17, 47, 49, 51, 53, 55, 57, 59, 61, 39, 24, 65, 67, 69, 71, 35, 38, 75, 77, 79, 81, 47, 36, 85, 87, 89, 91, 81, 12, 95, 97, 99, 101, 103, 40, 65, 107, 109, 111, 113, 115, 11
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Ordered sequence of squares and cubes is as in A002760 ( with added 0 ).
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FORMULA
| a(1)=1; n>1: a(n)=A002760(n+1)-A002760(n).
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EXAMPLE
| First sorted squares and cubes are: 0, 1, 4, 8, 9, 16, 25, 27, 36, 49, 64, 81, 100, hence a(1) = 1 - 0 = 1, a(10) = 64 - 49 = 15, a(12) = 100 - 81 = 19.
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CROSSREFS
| Cf. A002760.
Sequence in context: A053289 A076412 A053707 * A111516 A116392 A174607
Adjacent sequences: A075049 A075050 A075051 * A075053 A075054 A075055
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KEYWORD
| nonn
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AUTHOR
| Zak Seidov (zakseidov(AT)yahoo.com), Oct 07 2002
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