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A072387 Triangular number x such that x + reverse of x is a prime. 0
1, 10, 190, 11026, 11476, 12880, 13366, 19306, 21115, 23005, 26335, 28441, 36046, 53956, 54946, 58996, 60031, 65341, 68635, 70876, 72010, 83845, 91378, 1030330, 1047628, 1095940, 1100386, 1154440, 1205128, 1209790, 1223830, 1242676 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..32.

EXAMPLE

10 is a term because it is triangular number and 10+01=11 is prime.

CROSSREFS

Sequence in context: A211826 A045756 A144772 * A134633 A006436 A187652

Adjacent sequences:  A072384 A072385 A072386 * A072388 A072389 A072390

KEYWORD

base,nonn

AUTHOR

Shyam Sunder Gupta (guptass(AT)rediffmail.com), Jul 20 2002

STATUS

approved

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Last modified May 20 01:21 EDT 2013. Contains 225445 sequences.