A171953 Positions of 3's in A181391.

20, 22, 28, 33, 38, 46, 49, 50, 61, 68, 70, 76, 78, 86, 94, 103, 201, 204, 205, 217, 230, 256, 259, 260, 281, 327, 369, 391, 394, 395, 403, 422, 492, 550, 575, 583, 672, 675, 676, 740, 804, 815, 843, 1103, 1165, 1488, 1491, 1492, 1543, 1668

Offset: 1

Author

N. J. A. Sloane, Oct 29 2010

Keywords

• nonn

Links

• N. J. A. Sloane, Table of n, a(n) for n = 1..143

Crossrefs

Cf. A181391, A171865, A171951-A171956.