A248942 Wrecker ball sequence starting with 20.

20, 19, 17, 14, 10, 5, -1, 6, -2, 7, -3, 8, -4, 9, -5, -20, -36, -19, -37, -18, 2, 23, 1, -22, -46, -21, -47, -74, -102, -73, -43, -12, -44, -11, -45, -10, 26, 63, 25, -14, -54, -13, 29, 72, 28, -17, -63, -16, 32, 81, 31, 82, 30, -23, -77, -132, -76, -133

Offset: 0

Author

Reinhard Zumkeller, Oct 18 2014

Keywords

• sign
• fini
• full

Comments

Finite sequence with A228474(20) + 1 = 132897 terms;

row 20 of table A248939: a(n) = A248939(20,n) for n = 0..132896;

A248952(20) = -657367 <= a(n) <= 891114 = A248953(20).

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 0..132896
• Gordon Hamilton, Wrecker Ball Sequences, Video, 2013

Crossrefs

Cf. A248939, A228474, A248940 (start with 7), A248941 (start with 17).

Programs

Haskell

a248942 n = a248942_list !! n
a248942_list = a248939_row 20