id:A034955 - OEIS Search Results

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Even triangular numbers with prime indices.

+0
3

6, 28, 66, 190, 276, 496, 946, 1128, 1770, 2278, 2556, 3160, 3486, 5356, 5778, 8128, 8646, 9730, 11476, 13366, 14028, 16110, 18336, 19900, 22366, 24976, 25878, 28680, 31626, 34716, 36856, 40186, 47278, 48516, 54946, 60378, 64620, 67528, 72010 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`Prime indices p so that p(p+1)/2 is 'even' see A002145 (Primes of form 4n+3).`
	LINKS	`Eric Weisstein's World of Mathematics, Triangular Number`
	CROSSREFS	`Cf. A014493, A034953, A034954.` `Adjacent sequences: A034952 A034953 A034954 this_sequence A034956 A034957 A034958` `Sequence in context: A058007 A033588 A014635 this_sequence A117978 A119174 A055711`
	KEYWORD	`nonn`
	AUTHOR	`Patrick De Geest (pdg(AT)worldofnumbers.com), Oct 15 1998.`

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Last modified October 13 02:37 EDT 2008. Contains 145008 sequences.

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