id:A117694 - OEIS Search Results

Search: id:A117694

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(n^n + n)/2.

+0
1

1, 3, 15, 130, 1565, 23331, 411775, 8388612, 193710249, 5000000005, 142655835311, 4458050224134, 151437553296133, 5556003412779015, 218946945190429695, 9223372036854775816, 413620130943168382097, 19673204037648268787721 (list; graph; listen)

	OFFSET	`1,2`
	COMMENT	`a(n) = A066068(n)/2, n>0.`
	FORMULA	`a(n) = (n^n + n)/2`
	MATHEMATICA	`Table[n^n+n, {n, 1, 30}]/2`
	CROSSREFS	`Cf. A066068.` `Sequence in context: A135255 A075475 A074241 this_sequence A108210 A006717 A059861` `Adjacent sequences: A117691 A117692 A117693 this_sequence A117695 A117696 A117697`
	KEYWORD	`nonn`
	AUTHOR	`Alexander Adamchuk (alex(AT)kolmogorov.com), Apr 12 2006`

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Last modified November 29 12:46 EST 2009. Contains 167659 sequences.

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