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A343047 a(n) = A343046(n, n). 3
0, 1, 6, 9, 12, 15, 210, 217, 246, 249, 252, 255, 420, 427, 456, 459, 492, 495, 630, 637, 666, 669, 702, 705, 840, 847, 876, 879, 912, 915, 30030, 30061, 30246, 30279, 30252, 30285, 32550, 32587, 32586, 32589, 32592, 32595, 32760, 32797, 32796, 32799, 32832 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,3
COMMENTS
This sequence has similarities with A087019 and A343043.
LINKS
FORMULA
a(A002110(k)) = A002110(2*k) for any k >= 0.
a(A143293(k)) = A143293(2*k) for any k >= 0.
EXAMPLE
For n = 2:
- the primorial base representation of 2 is "10", so:
1 0
x 1 0
-----
0 0
+ 1 0
-------
1 0 0
- hence a(2) = 2*3 = 6.
PROG
(PARI) See Links section.
CROSSREFS
Sequence in context: A315955 A315956 A343043 * A023040 A001474 A084806
KEYWORD
nonn,base
AUTHOR
Rémy Sigrist, Apr 05 2021
STATUS
approved

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Last modified March 29 09:14 EDT 2024. Contains 371268 sequences. (Running on oeis4.)