A158750 Primes that are the concatenation of the first k triangular numbers for some k.

13, 136101521

Offset

1,1

Comments

Next term, if it exists, would be very large, as there are no other primes of this form up to at least index 1600.

Links

Table of n, a(n) for n=1..2.

Eric Weisstein's World of Mathematics, Consecutive Number Sequences

Crossrefs

Cf. A078795.

Sequence in context: A324270 A351238 A177027 * A145744 A174309 A081509

Adjacent sequences: A158747 A158748 A158749 * A158751 A158752 A158753

Keyword

nonn,more,bref,base

Author

Eric W. Weisstein, Mar 25 2009

Extensions

Name clarified by Jon E. Schoenfield, Jul 13 2021

Status

approved