A025674 Exponent of 8 (value of j) in n-th number of form 6^i*8^j.

0, 0, 1, 0, 1, 2, 0, 1, 2, 3, 0, 1, 2, 3, 4, 0, 1, 2, 3, 4, 5, 0, 1, 2, 3, 4, 5, 6, 0, 1, 2, 3, 4, 5, 6, 0, 7, 1, 2, 3, 4, 5, 6, 0, 7, 1, 8, 2, 3, 4, 5, 6, 0, 7, 1, 8, 2, 9, 3, 4, 5, 6, 0, 7, 1, 8, 2, 9, 3, 10, 4, 5, 6, 0, 7, 1, 8, 2, 9, 3, 10, 4, 11, 5, 6, 0, 7, 1, 8, 2, 9, 3, 10, 4, 11, 5, 12, 6, 0, 7, 1, 8, 2, 9

Offset

1,6

Links

Amiram Eldar, Table of n, a(n) for n = 1..10000

Index entries for sequences which agree for a long time but are different.

Formula

a(n) = A244413(A025627(n)/6^A025661(n)). - Amiram Eldar, Jul 09 2025

Mathematica

With[{max = 10^12}, SortBy[Flatten[Table[{i, j}, {i, 0, Log[6, max]}, {j, 0, Log[8, max/6^i]}], 1], 6^#[[1]] * 8^#[[2]] &][[;; , 2]]] (* Amiram Eldar, Jul 09 2025 *)

Crossrefs

Cf. A025627, A025661, A244413.

Differs from A025650 at a(1881).

Sequence in context: A025667 A025689 A025650 * A025681 A025659 A163351

Adjacent sequences: A025671 A025672 A025673 * A025675 A025676 A025677

Keyword

nonn

Author

David W. Wilson

Status

approved