A138137 - OEIS

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A138137

First differences of A006128.

1, 2, 3, 6, 8, 15, 19, 32, 42, 64, 83, 124, 157, 224, 288, 395, 502, 679, 854, 1132, 1422, 1847, 2307, 2968, 3677, 4671, 5772, 7251, 8908, 11110, 13572, 16792, 20439, 25096, 30414, 37138, 44798, 54389, 65386, 78959, 94558, 113687, 135646, 162375, 193133 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	COMMENTS	`Number of parts of the outer shell of the partitions of n. (see A135010, A138121).` `Sum of largest parts in all partitions of the head of the outer shell of the partitions of n. - Omar E. Pol, Nov 07 2011`
	FORMULA	`a(n) = A006128(n) - A006128(n-1).` `a(n) = A000041(n-1) + A138135(n). - Omar E. Pol, Nov 07 2011`
	CROSSREFS	`Cf. A006128, A135010, A138121.` `Sequence in context: A206370 A095162 A075723 * A129374 A048809 A047001` `Adjacent sequences: A138134 A138135 A138136 * A138138 A138139 A138140`
	KEYWORD	`easy,nonn`
	AUTHOR	`Omar E. Pol (info(AT)polprimos.com), Mar 18 2008`

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