id:A113238 - OEIS Search Results

Search: id:A113238

Displaying 1-1 of 1 results found.

page 1

Differences of nonzero tribonacci numbers.

+0
7

0, 1, 2, 3, 5, 6, 9, 11, 12, 17, 20, 22, 23, 31, 37, 40, 42, 43, 57, 68, 74, 77, 79, 80, 105, 125, 136, 142, 145, 147, 148, 193, 230, 250, 261, 267, 270, 272, 273, 355, 423, 460, 480, 491, 497, 500, 502, 503, 653, 778, 846, 883, 903, 914, 920, 923, 925, 926, 1201 (list; graph; listen)

	OFFSET	`1,3`
	COMMENT	`Primes in this sequence are A113239. Perfect powers include: 9 = 3^2, 125 = 5^3, 1681 = 41^2, 2209 = 47^2, 25281 = 159^2 = 3^2 * 53^2. A113188-A113194 deal with difference sets of Fibonacci numbers and Lucas numbers and primes in those difference sets.`
	FORMULA	`{a(n)} = { A000073(i) - A000073(j) such that i>=j }. Nonnegative elements in difference set of tribonacci sequence A000073.`
	CROSSREFS	`Cf. A000073, A113188-A113194.` `Sequence in context: A026459 A026461 A026168 this_sequence A104214 A046657 A102825` `Adjacent sequences: A113235 A113236 A113237 this_sequence A113239 A113240 A113241`
	KEYWORD	`easy,nonn`
	AUTHOR	`Jonathan Vos Post (jvospost3(AT)gmail.com), Oct 19 2005`

page 1

Search completed in 0.002 seconds

Last modified December 8 08:31 EST 2009. Contains 170430 sequences.

AT&T Labs Research