id:A068571 - OEIS Search Results

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Number of happy numbers <=10^n.

+0
2

1, 3, 20, 143, 1442, 14377, 143071, 1418854, 14255667, 145674808, 1492609148, 15091199357, 149121303586, 1443278000870, 13770853279685, 130660965862333, 1245219117260664, 12024696404768025, 118226055080025491, 1183229962059381238, 12005034444292997294 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`L. Klasen, Table of n, a(n) for n = 0..122` `L. Klasen, Xeen3d's happy.html` `W. Schneider, Happy Numbers` `Eric Weisstein's World of Mathematics, Happy Number`
	CROSSREFS	`Cf. A007770.` `Sequence in context: A082143 A009156 A074573 this_sequence A074569 A026303 A154627` `Adjacent sequences: A068568 A068569 A068570 this_sequence A068572 A068573 A068574`
	KEYWORD	`nonn`
	AUTHOR	`Sascha Kurz (sascha.kurz(AT)uni-bayreuth.de), Mar 26 2002`
	EXTENSIONS	`More terms from Lambert Klasen (Lambert.Klasen(AT)gmx.de), Nov 03 2004`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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