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A120310 See comments lines. 0
98, 72, 77, 49, 54, 20, 10, 1, 11, 2, 13, 4, 17, 8, 25, 7, 1, 2, 2, 6, 3, 12, 4, 20, 5, 15, 20, 13, 18, 11, 0, 0, 4, 9, 8, 18, 12, 27 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Comment from Joshua Zucker, May 26 2007. This appears to be a concatenation of five puzzles:
98,72,77,49,54,20,25,10,15,5,10,0,5,5,10,0,5,5,10,0,... (start with 98, then write down the product of its digits, then add 5, repeat) - see A129887.
10,1,11,2,13,4,17,8,25,7,... (start with 10; write down the sum of its digits; add last two terms; repeat) - see A129888.
1,2,2,6,3,12,4,20,5,30,6,42,... (write down n, then n(n+1)) - see A129889.
15,20,13,18,11,16,9,14,... (interleave two arithmetic progressions of difference -2).
0,0,4,9,8,18,12,27,16,36,20,... (interleave two arithmetic progressions 0,4,8,12,... and 0,9,18,27,...)
LINKS
CROSSREFS
Sequence in context: A114430 A258765 A033418 * A129887 A205067 A307371
KEYWORD
nonn,dumb,unkn
AUTHOR
Sydney Richardson (AmyNStiers(AT)aol.com), Aug 16 2006
STATUS
approved

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Last modified July 13 18:54 EDT 2024. Contains 374285 sequences. (Running on oeis4.)