id:A117674 - OEIS Search Results

Search: id:A117674

Displaying 1-1 of 1 results found.

page 1

Prime numbers for which the sum of the digits is a triangular number.

+0
1

3, 19, 37, 73, 109, 127, 163, 181, 271, 307, 433, 523, 541, 613, 631, 811, 1009, 1063, 1117, 1153, 1171, 1423, 1531, 1621, 1801, 1999, 2017, 2053, 2143, 2161, 2251, 2341, 2503, 2521, 3061, 3313, 3331, 3511, 3889, 4051, 4231, 4789, 4969, 4987, 5023, 5113 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`1999 is in the sequence because (1) it is a prime number, and (2) the sum of its digits 1+9+9+9=28 is a triangular number.`
	CROSSREFS	`Cf. A000217.` `Sequence in context: A062291 A106082 A088786 this_sequence A114704 A131542 A042371` `Adjacent sequences: A117671 A117672 A117673 this_sequence A117675 A117676 A117677`
	KEYWORD	`nonn,base`
	AUTHOR	`Luc Stevens (lms022(AT)yahoo.com), Apr 27 2006`

page 1

Search completed in 0.002 seconds

Last modified November 18 20:14 EST 2008. Contains 147244 sequences.

AT&T Labs Research