id:A101634 - OEIS Search Results

Search: id:A101634

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Subtract 1, multiply by 1, subtract 2, multiply by 2, etc.

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6, 5, 6, 9, 20, 75, 414, 2849, 22728, 204471, 2044610, 22490589, 269886924, 3508529843, 49119417606, 736791263865, 11788660221584, 200407223766639, 3607330027799178, 68539270528184021, 1370785410563680020 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Inspired by A019460. a(1) = 6 is the least integer producing all nonnegative terms.`
	FORMULA	`a_(n+1) = (a_n -n)*n; a_1=6`
	MATHEMATICA	`a=6; bb={a}; Do[b=i(a-i); a=b; bb={bb, a}, {i, 20}]; Flatten[bb]`
	CROSSREFS	`Cf. A019460.` `Sequence in context: A133616 A019621 A126689 this_sequence A071176 A089826 A086268` `Adjacent sequences: A101631 A101632 A101633 this_sequence A101635 A101636 A101637`
	KEYWORD	`easy,nonn`
	AUTHOR	`Zak Seidov (zakseidov(AT)yahoo.com), Jan 26 2005`

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Last modified November 30 22:12 EST 2008. Contains 150989 sequences.

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