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A025640 Exponent of 3 (value of i) in n-th number of form 3^i*4^j. 1
0, 1, 0, 2, 1, 0, 3, 2, 1, 0, 4, 3, 2, 1, 5, 0, 4, 3, 2, 6, 1, 5, 0, 4, 3, 7, 2, 6, 1, 5, 0, 4, 8, 3, 7, 2, 6, 1, 5, 0, 9, 4, 8, 3, 7, 2, 6, 1, 10, 5, 0, 9, 4, 8, 3, 7, 2, 11, 6, 1, 10, 5, 0, 9, 4, 8, 3, 12, 7, 2, 11, 6, 1, 10, 5, 0, 9, 4, 13, 8, 3, 12, 7, 2, 11, 6, 1, 10, 5, 0, 14, 9, 4, 13, 8, 3, 12, 7, 2, 11, 6 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

David A. Corneth, Table of n, a(n) for n = 1..10000

EXAMPLE

a(20) = 6 as the 20th number of the form 3^i * 4^j is 729 = 3^6 * 4^0 (See A025613). So the value of i in that factorization is the exponent of 3 which is 6. - David A. Corneth, Jan 28 2021

CROSSREFS

Cf. A025613.

Sequence in context: A025671 A025652 A025662 * A025663 A025647 A025653

Adjacent sequences:  A025637 A025638 A025639 * A025641 A025642 A025643

KEYWORD

nonn

AUTHOR

David W. Wilson

STATUS

approved

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Last modified July 4 05:35 EDT 2022. Contains 355064 sequences. (Running on oeis4.)