A129834 - OEIS

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A129834

Suggested by A001372 as odd numbers to 130: (not in OEIS even with zeros taken off).

0, 0, 1, 3, 9, 23, 171, 475, 1307, 10245, 28951, 233099, 664496, 5442024, 3109434694, 218785948496 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,4`
	REFERENCES	`F. Hivert, J.-C. Novelli and J.-Y. Thibon, Commutative combinatorial Hopf algebras`
	FORMULA	`a(n) = If [an Integer,(A001372(n)-1)/2]`
	MATHEMATICA	`A001372 = {1, 1, 3, 7, 19, 47, 130, 343, 951, 2615, 7318, 20491, 57903, 163898, 466199, 1328993, 3799624, 10884049, 31241170, 89814958, 258604642, 745568756, 2152118306, 6218869389, 17988233052, 52078309200, 150899223268, 437571896993 }; Flatten[Table[If[IntegerQ[(A001372[[n]] - 1)/2], (A001372[[n]] - 1)/2, {}], { n, 1.Length[A001372]}]]`
	CROSSREFS	`Cf. A001372.` `Sequence in context: A147508 A146472 A145955 * A029488 A198681 A024314` `Adjacent sequences: A129831 A129832 A129833 * A129835 A129836 A129837`
	KEYWORD	`nonn,uned`
	AUTHOR	`Roger L. Bagula (rlbagulatftn(AT)yahoo.com), May 21 2007`

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Last modified February 23 07:54 EST 2012. Contains 206628 sequences.