The OEIS is looking to hire part-time people to help edit core sequences, upload scanned documents, process citations, fix broken links, etc. - Neil Sloane, firstname.lastname@example.org
Essentially the same as A008837; only the first terms differ.
Table of n, a(n) for n=1..42.
(PARI) T(n) = n*(n+1)/2 for(n=1, 100, p=prime(n); tr=1; while(T(tr)%p<>0, tr++); print1(T(tr), ", "))
Cf. A000217 (triangular numbers), A008837 (p(p-1)/2 for p prime).
Sequence in context: A249948 A066070 A272549 * A060534 A060445 A131894
Adjacent sequences: A112453 A112454 A112455 * A112457 A112458 A112459
Rick L. Shepherd, Sep 06 2005