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A043046
a(n) = (s(n)+1)/3, where s(n) = n-th base 3 palindrome that starts with 2.
1
1, 3, 7, 8, 9, 19, 23, 27, 55, 58, 61, 65, 68, 71, 75, 78, 81, 163, 175, 187, 191, 203, 215, 219, 231, 243, 487, 496, 505, 517, 526, 535, 547, 556, 565, 569, 578, 587, 599, 608, 617, 629, 638, 647, 651, 660, 669, 681, 690, 699, 711
OFFSET
1,2
CROSSREFS
Sequence in context: A375019 A114441 A354023 * A030674 A030684 A276002
KEYWORD
nonn,base
STATUS
approved