A296305 Triangular array T(n, k) read by rows, n > 0, 0 < k <= n: T(n, k) = A297673(n, k) + A297673(n+1, k) + A297673(n+1, k+1).

7, 11, 17, 17, 23, 29, 31, 37, 31, 43, 43, 53, 53, 61, 59, 53, 71, 79, 79, 71, 71, 71, 79, 89, 89, 89, 97, 107, 97, 107, 127, 127, 109, 113, 127, 127, 127, 137, 137, 163, 149, 131, 139, 157, 163, 149, 167, 163, 173, 173, 157, 163, 179, 193, 197, 173, 211, 211

Offset

1,1

Comments

All terms are odd prime numbers.

Links

Rémy Sigrist, Rows n = 1..100, flattened

Rémy Sigrist, PARI program for A296305

Example

Triangle begins:
   1:                                 7
   2:                             11,   17
   3:                          17,   23,   29
   4:                       31,   37,   31,   43
   5:                    43,   53,   53,   61,   59
   6:                 53,   71,   79,   79,   71,   71
   7:              71,   79,   89,   89,   89,   97,  107
   8:           97,  107,  127,  127,  109,  113,  127,  127
   9:       127,  137,  137,  163,  149,  131,  139,  157,  163
  10:    149,  167,  163,  173,  173,  157,  163,  179,  193,  197

Prog

(PARI) See Links section.

Crossrefs

Cf. A297673.

Sequence in context: A293343 A131626 A086762 * A349997 A076045 A101618

Adjacent sequences: A296302 A296303 A296304 * A296306 A296307 A296308

Keyword

nonn,tabl,easy

Author

Rémy Sigrist, Jan 03 2018

Status

approved