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A137217
A self-describing sequence: 2 odd digits between two even, then 3 odd digits between two even, then 5 odd digits between two even, then 6, then 7... The length of each run of odd digits is given by the sequence itself (the smallest available integer is used when needed). Zero is an even digit.
0
2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15, 17, 19, 21, 31, 33, 35, 41, 51, 53, 55, 57, 61, 71, 73, 75, 77, 78, 79, 91, 93, 95, 97, 98, 99, 111, 113, 115, 116, 117, 119, 131, 133, 134, 135, 137, 139, 151, 153, 211, 311, 313, 315, 317, 319, 411, 511, 513, 515, 517, 519, 530
OFFSET
1,1
EXAMPLE
Runs of odd digits are between brackets:
Seq: 2,(3,5),6,(7,9,1)0,(11,13,1)4,(15,17,19),2(1,31,33,35),4(1,
Runs:....2........3.........5...........6............7.....= sequence itself.
CROSSREFS
Cf. A135604.
Sequence in context: A371088 A368110 A083347 * A367625 A023705 A188070
KEYWORD
base,nonn
AUTHOR
Eric Angelini, Mar 06 2008
STATUS
approved