A123053 - OEIS

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A123053

Sum of a positive square, a positive cube and a positive fourth power.

3, 6, 10, 11, 13, 18, 21, 25, 26, 27, 28, 29, 32, 33, 34, 37, 40, 42, 44, 45, 47, 49, 51, 52, 53, 58, 59, 60, 64, 66, 68, 69, 73, 74, 77, 79, 81, 83, 84, 88, 89, 90, 91, 92, 96, 98, 101, 102, 105, 107, 108, 109 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	FORMULA	`{A000290 \ 0} + {A000578 \ 0} + {A000583}. {a^4 + b^3 + c^2 for a,b,c>0}.`
	EXAMPLE	`a(1) = 3 = 1^4 + 1^3 + 1^2.` `a(2) = 6 = 1^4 + 1^3 + 2^2.` `a(3) = 10 = 1^4 + 2^3 + 1^2.` `a(4) = 11 = 1^4 + 1^3 + 3^2.` `a(5) = 13 = 1^4 + 2^3 + 2^2.` `a(6) = 18 = 1^4 + 1^3 + 4^2 = 1^4 + 2^3 + 3^2 = 2^4 + 1^3 + 1^2.`
	CROSSREFS	`Cf. A000290, A000578, A000583, A055394 Numbers that are the sum of a positive square and a positive cube.` `Sequence in context: A169911 A073851 A043321 * A138289 A105359 A105355` `Adjacent sequences: A123050 A123051 A123052 * A123054 A123055 A123056`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jonathan Vos Post (jvospost3(AT)gmail.com), Sep 25 2006`

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Last modified February 17 00:09 EST 2012. Contains 205978 sequences.