id:A079800 - OEIS Search Results

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Initial term of n-th group in A079798.

+0
4

1, 2, 4, 7, 12, 34, 187, 2959, 48247, 19840327, 2510415286599, 521698566186280239802, 4471373101273208723788137885117929799, 1253543310663256238898448262146285580160101720412514117844237110599 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`For n>1, a(n) = A079801(n-1) + 1. Also, a(n) = (sqrt(8*(A079798(1) + A079798(2) + ... + A079798(n-1)) + 1) + 1) / 2. [From Max Alekseyev (maxale(AT)gmail.com), May 08 2009]`
	CROSSREFS	`Cf. A079798, A079799, A079801.` `Cf. A075633 [From Max Alekseyev (maxale(AT)gmail.com), May 08 2009]` `Sequence in context: A018181 A141017 A027945 this_sequence A094271 A018414 A002152` `Adjacent sequences: A079797 A079798 A079799 this_sequence A079801 A079802 A079803`
	KEYWORD	`nonn`
	AUTHOR	`Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 05 2003`
	EXTENSIONS	`Extended by Max Alekseyev (maxale(AT)gmail.com), May 08 2009`

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Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

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