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A043015
Base-7 palindromes that start with 1.
1
1, 8, 50, 57, 64, 71, 78, 85, 92, 344, 400, 456, 512, 568, 624, 680, 2402, 2451, 2500, 2549, 2598, 2647, 2696, 2752, 2801, 2850, 2899, 2948, 2997, 3046, 3102, 3151, 3200, 3249, 3298, 3347, 3396, 3452, 3501, 3550, 3599, 3648
OFFSET
1,2
LINKS
MATHEMATICA
b7pQ[n_]:=Module[{idn7=IntegerDigits[n, 7]}, idn7[[1]]==1&&idn7== Reverse[ idn7]]; Select[Range[4000], b7pQ]
CROSSREFS
Sequence in context: A299883 A043398 A038481 * A076286 A299049 A299811
KEYWORD
nonn,base
STATUS
approved