A139796 - OEIS

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A139796

Last term of A139687(n) with a fourth leading 1 = 1, 1, 1, 1, 2, 2, 1, 3, 5, 5 rows.

1, 1, 2, 5, 9, 28, 48, 165, 275, 1001, 1638, 6188 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	COMMENTS	`Based on sequences identical to their p-th differences.`
	FORMULA	`Odd rows are 1; 1, 2, 2; 1, 3, 6, 9, 9; 1, 4, 10, 20, 34, 48, 48; 1, 5, 15, 35, 70, 125, 200, 275, 275; 1, 6, 21, 56, 126, 252, 461, 780, 1209, 1638, 1638; with respective sums second bisection a(2n+1)= 1, 5, 28, 165, 1001, 6188 = A025174(n+1)?`
	CROSSREFS	`Cf. A094600.` `Sequence in context: A109742 A072979 A094600 * A086586 A105456 A128565` `Adjacent sequences: A139793 A139794 A139795 * A139797 A139798 A139799`
	KEYWORD	`nonn,uned`
	AUTHOR	`Paul Curtz (bpcrtz(AT)free.fr), Jun 14 2008`

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Last modified February 13 21:09 EST 2012. Contains 205561 sequences.