login
This site is supported by donations to The OEIS Foundation.
Logo

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A034954 Odd triangular numbers with prime indices. 2
3, 15, 91, 153, 435, 703, 861, 1431, 1891, 2701, 4005, 4753, 5151, 5995, 6441, 9453, 11175, 12403, 15051, 16471, 18721, 19503, 26335, 27261, 29161, 33153, 36315, 38503, 39621, 43071, 49141, 50403, 56953, 61075, 62481, 69751, 75855, 79003 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

For prime indices p such that p(p+1)/2 is 'odd' see A002313 (primes of form 4n+1).

LINKS

Eric Weisstein's World of Mathematics, Triangular Number

CROSSREFS

Cf. A014493, A034953, A034955.

Sequence in context: A201953 A185369 A024339 * A077783 A047019 A099251

Adjacent sequences:  A034951 A034952 A034953 * A034955 A034956 A034957

KEYWORD

nonn

AUTHOR

Patrick De Geest (pdg(AT)worldofnumbers.com), Oct 15 1998.

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Puzzles | Hot | Classics
Recent Additions | More pages | Superseeker | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement .

Last modified February 17 07:41 EST 2012. Contains 205998 sequences.