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A026225 a(n) = (1/3)*(s(n+1) - 1), where s = A026224. 5
1, 3, 4, 7, 9, 10, 12, 13, 16, 19, 21, 22, 25, 27, 28, 30, 31, 34, 36, 37, 39, 40, 43, 46, 48, 49, 52, 55, 57, 58, 61, 63, 64, 66, 67, 70, 73, 75, 76, 79, 81, 82, 84, 85, 88, 90, 91, 93, 94, 97, 100, 102, 103, 106, 108, 109, 111, 112, 115 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

Numbers of the form (3*i+1)*3^j; see A182828.

CROSSREFS

Sequence in context: A057709 A037988 A088958 * A026140 A059010 A066928

Adjacent sequences:  A026222 A026223 A026224 * A026226 A026227 A026228

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 14 14:07 EST 2012. Contains 205623 sequences.