A082258 In the following triangular array the n-th row contains n primes (wherever possible) with digit sum n. Sequence contains the leading diagonal with a zero if no number exists.

0, 11, 0, 211, 131, 0, 313, 503, 0, 433, 353, 0, 643, 653, 0, 1069, 881, 0, 1693, 2459, 0, 3469, 4289, 0, 6379, 6983, 0, 9883, 9857, 0, 19759, 32999, 0, 49597, 58679, 0, 79867, 89669, 0, 167899, 268979, 0, 467899, 498689, 0, 699697, 799859, 0, 998779, 2499989

Offset

1,2

Links

Table of n, a(n) for n=1..50.

Example

Triangle begins:
-
2 11
3 - -
13 31 103 211
5 23 41 113 131
- - - - - -
7 43 61 151 223 241 313
...

Crossrefs

Sequence in context: A287468 A110417 A240560 * A075361 A287630 A073864

Adjacent sequences: A082255 A082256 A082257 * A082259 A082260 A082261

Keyword

base,nonn

Author

Amarnath Murthy, Apr 12 2003

Extensions

Corrected and extended by David Wasserman, Aug 26 2004

Status

approved