id:A015025 - OEIS Search Results

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q-factorial numbers for q=-10.

+0
1

1, -9, -819, 744471, 6767985861, -615270826637649, -559337171058846967059, 5084883322413411422459366631, 462262120681663158624798004859942421, -420238291486760860506028808179511473194550689 (list; graph; listen)

	OFFSET	`1,2`
	FORMULA	`prod_{k=1}^{k=n} {(q^k - 1) / (q - 1)}`
	CROSSREFS	`Sequence in context: A159356 A091057 A137065 this_sequence A027878 A045793 A069054` `Adjacent sequences: A015022 A015023 A015024 this_sequence A015026 A015027 A015028`
	KEYWORD	`sign,easy`
	AUTHOR	`Olivier Gerard (olivier.gerard(AT)gmail.com)`

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

AT&T Labs Research