[seqfan] A007496 = A108942: 2^n & 5^n have no zero digit

Maximilian Hasler maximilian.hasler at gmail.com
Mon Oct 19 04:10:24 CEST 2009


Sequences A007496 and A108942 should be the same:
but 0 is missing in A007496.

Strange enough, neither of them references the other one.

I think it would be the best to add 0 in A007496,
rather than to modify artificially its definition in order to exclude 0,
even if I respect the fact that this is a "very old" sequence (M0497 !).

(I checked that this sequence is not referenced by any other sequence
in OEIS (neither is A108942), so the change in the indices resulting
in the addition of 0 should not affect any formula.)

If there are other / better suggestions, please go ahead.

Maximilian Hasler

PS: I intended to write "...gives END" instead of "...gives B" in my
previous mail, but after double-checking it seems that it should read
"...gives START"... sorry for the bad (non-)solution.

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