id:A078423 - OEIS Search Results

Search: id:A078423

Displaying 1-1 of 1 results found.

page 1

Group the natural numbers into clumps with increasing prime numbers of elements, then multiply the members of each clump.

+0
1

2, 60, 30240, 98017920, 857180548224000, 109720581991308288000, 70265584374661732509573120000, 61765285634580106110458762035200000, 642817384174195049892129048242945261568000000 (list; graph; listen)

	OFFSET	`0,1`
	EXAMPLE	`Dividing 1,2,3,4,5,6,7,8,9,10,... into clumps of 2,3,5,.. elements: {1,2}, {3,4,5}, {6,7,8,9,10}, ... and then multiply each clumps to get 2,60,30240,...`
	CROSSREFS	`Cf. A034956.` `Sequence in context: A001760 A056923 A082787 this_sequence A121493 A078491 A101896` `Adjacent sequences: A078420 A078421 A078422 this_sequence A078424 A078425 A078426`
	KEYWORD	`nonn`
	AUTHOR	`Lior Manor (lior.manor(AT)gmail.com) Dec 29 2002`

page 1

Search completed in 0.002 seconds

Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

AT&T Labs Research