A381598 Index of first term of three consecutive n's in A381597.

1, 9, 34, 147, 111, 359, 437, 389, 594, 826, 1102, 83317, 1789, 5142, 2931, 12671

Offset

1,2

Comments

The terms vary greatly in size - after 5.2 million terms of A381597 no three consecutive 17's or 18's have appeared, although three consecutive 19's appear at index 6474. The largest known term is a(192) = 5135798.

Links

Table of n, a(n) for n=1..16.

Crossrefs

Cf. A381597, A381599, A370708, A281511, A229037.

Sequence in context: A264678 A050478 A204426 * A154393 A119389 A197273

Adjacent sequences: A381594 A381595 A381597 * A381599 A381600 A381601

Keyword

nonn,more,new

Author

Scott R. Shannon, Mar 01 2025

Status

approved