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A071156 Apart from the initial term (0), lists all integers whose factorial expansion ends with 1 (i.e. are odd numbers), do not contain a digit zero and each successive digit to the left is at most one greater than the preceding digit. 11
0, 1, 3, 5, 9, 11, 15, 17, 23, 33, 35, 39, 41, 47, 57, 59, 63, 65, 71, 87, 89, 95, 119, 153, 155, 159, 161, 167, 177, 179, 183, 185, 191, 207, 209, 215, 239, 273, 275, 279, 281, 287, 297, 299, 303, 305, 311, 327, 329, 335, 359, 417, 419, 423, 425, 431, 447, 449 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

COMMENTS

a(n) = A085198(A014486(n)) = A071155(A057164(n)). Catalan numbers A000108(n) gives the number of terms whose factorial expansion contain n digits.

0 is included by considering it to have the empty string as its base factorial representation. - Frank Adams-Watters (FrankTAW(AT)Netscape.net), Jun 28 2006

CROSSREFS

The beginning of this sequence expanded in the factorial number system: A071158. Inverse function: A085199. First differences: A085191.

Cf. A000108 (row lengths), A071155, A120696.

Sequence in context: A078651 A101114 A120696 * A076610 A069205 A064988

Adjacent sequences:  A071153 A071154 A071155 * A071157 A071158 A071159

KEYWORD

base,nonn,tabf

AUTHOR

Antti Karttunen May 14 2002

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Last modified February 15 21:27 EST 2012. Contains 205859 sequences.