A120310 See comments lines.

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

Offset: 1

Author

Sydney Richardson (AmyNStiers(AT)aol.com), Aug 16 2006

Keywords

• nonn
• dumb
• unkn

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,...)