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A328257
Terms appearing more than once in A309940, in ascending order.
2
1, 2, 3, 173, 193, 391, 3298, 19750, 46327, 316829, 393923, 3613513, 5727571, 15140393, 26528704, 661899193
OFFSET
1,2
EXAMPLE
A309940(15) = A309940(17) = 173, hence 173 is a term.
PROG
(PARI) See Links section.
CROSSREFS
Cf. A309940.
Sequence in context: A371231 A042369 A371273 * A042701 A371232 A246488
KEYWORD
nonn,base,more
AUTHOR
Rémy Sigrist, Oct 09 2019
STATUS
approved