A288502 Strings of digits from 1...9 such that any possible formula using the single digits in the given order that evaluates to 0 needs to include at least one division.

263, 284, 362, 393, 482, 1262, 1284, 1293, 1382, 1393, 1482, 1493, 1631, 1823, 1841, 1932, 1934, 2162, 2173, 2184, 2193, 2194, 2195, 2346, 2375, 2593, 2597, 2612, 2621, 2625, 2638, 2658, 2674, 2713, 2735, 2813, 2814, 2831, 2841, 2843, 2845, 2847, 2849, 2859, 2895, 2914

Offset

1,1

Comments

For definitions see A288350.

Links

Hugo Pfoertner, Table of n, a(n) for n = 1..1009

Hugo Pfoertner, Formulas with result 0 for all sequence terms.

Example

1262 is in the sequence, because no formula with result 0 avoiding divisions can be found, but 0=1+2-(6/2). A file with examples of formulas for all sequence terms is provided, see link section.

Crossrefs

Cf. A288350, A288352.

Sequence in context: A345577 A345834 A180556 * A320710 A142754 A245877

Adjacent sequences: A288499 A288500 A288501 * A288503 A288504 A288505

Keyword

nonn,base,fini,full

Author

Hugo Pfoertner, Jun 10 2017

Status

approved