Table of n, a(n) for n=1..10.
a(3)=631 because 631 is the smallest prime formed by reverse concatenation of 3 consecutive triangular numbers i.e. 1,3 and 6.
Sequence in context: A229258 A319896 A222895 * A104841 A092552 A322487
Adjacent sequences: A105290 A105291 A105292 * A105294 A105295 A105296
Shyam Sunder Gupta, Apr 25 2005