A025725 Index of 7^n within sequence of numbers of form 7^i*8^j.

1, 2, 4, 7, 11, 16, 22, 29, 37, 46, 56, 67, 79, 92, 106, 121, 136, 152, 169, 187, 206, 226, 247, 269, 292, 316, 341, 367, 394, 422, 451, 481, 511, 542, 574, 607, 641, 676, 712, 749, 787, 826, 866, 907, 949, 992, 1036, 1080, 1125, 1171, 1218, 1266, 1315, 1365, 1416

Offset

1,2

Links

Table of n, a(n) for n=1..55.

Crossrefs

Sequence in context: A025733 A025716 A254835 * A025732 A025739 A000124

Adjacent sequences: A025722 A025723 A025724 * A025726 A025727 A025728

Keyword

nonn

Author

David W. Wilson

Status

approved