

A161177


Index of first multiple of nth prime in A005179.


0



2, 4, 12, 32, 96, 240, 640, 1280, 2560, 9600, 19200, 57344, 114688, 229376, 458752, 1290240, 3145728, 6291456, 13762560, 27525120, 62914560, 134217728, 335544320, 671088640, 1342177280, 2684354560, 5368709120, 10737418240, 26306674688, 52613349376
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OFFSET

1,1


COMMENTS

The numbers are divisible by higher and higher powers of 2 because the numbers in A005179 typically have a "tail" of primes occurring in first power only.
What is the smallest term divisible by 11? (End)


LINKS



FORMULA



EXAMPLE

a(3)=12: The third prime is 5 and A005179(12)=60 is the first multiple of 5 occurring in sequence A005179.


PROG



CROSSREFS



KEYWORD

nonn,hard,more


AUTHOR



EXTENSIONS



STATUS

approved



